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Adultery laws are the laws in various countries that deal with
extramarital sex Extramarital sex occurs when a married person engages in sexual activity with someone other than their spouse. The term may be applied to the situation of a single person having sex with a married person. Where extramarital sexual relations do n ...
. Historically, many cultures considered
adultery Adultery (from Latin ''adulterium'') is extramarital sex that is considered objectionable on social, religious, moral, or legal grounds. Although the sexual activities that constitute adultery vary, as well as the social, religious, and legal ...
a very serious
crime In ordinary language, a crime is an unlawful act punishable by a state or other authority. The term ''crime'' does not, in modern criminal law, have any simple and universally accepted definition,Farmer, Lindsay: "Crime, definitions of", in C ...
, some subject to severe punishment, especially in the case of extramarital sex involving a married woman and a man other than her husband, with penalties including
capital punishment Capital punishment, also known as the death penalty, is the state-sanctioned practice of deliberately killing a person as a punishment for an actual or supposed crime, usually following an authorized, rule-governed process to conclude that ...
,
mutilation Mutilation or maiming (from the Latin: ''mutilus'') refers to Bodily harm, severe damage to the body that has a ruinous effect on an individual's quality of life. It can also refer to alterations that render something inferior, ugly, dysfunction ...
, or
torture Torture is the deliberate infliction of severe pain or suffering on a person for reasons such as punishment, extracting a confession, interrogation for information, or intimidating third parties. Some definitions are restricted to acts ...
. Such punishments have gradually fallen into disfavor, especially in
Western countries The Western world, also known as the West, primarily refers to the various nations and states in the regions of Europe, North America, and Oceania.
from the 19th century. In countries where adultery is still a criminal offense, punishments range from fines to
caning Caning is a form of corporal punishment consisting of a number of hits (known as "strokes" or "cuts") with a single cane usually made of rattan, generally applied to the offender's bare or clothed buttocks (see spanking) or hands (on the ...
and even capital punishment. Since the 20th century, criminal laws against adultery have become controversial, with most Western countries repealing them. Most countries that criminalize adultery are those where the dominant religion is Islam, and several
Sub-Saharan Africa Sub-Saharan Africa is, geographically, the area and regions of the continent of Africa that lies south of the Sahara. These include West Africa, East Africa, Central Africa, and Southern Africa. Geopolitically, in addition to the List of sov ...
n Christian-majority countries, but there are some notable exceptions to this rule, namely
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
and 16 U.S. states. However, even in jurisdictions that have decriminalised adultery, adultery may still have legal consequences, particularly in jurisdictions with fault-based divorce laws, where adultery almost always constitutes a
ground for divorce Grounds for divorce are regulations specifying the circumstances under which a person will be granted a divorce. Adultery is the most common grounds for divorce. However, there are countries that view male adultery differently than female adulter ...
and may be a factor in
property settlement Division of property, also known as equitable distribution, is a judicial division of property rights and obligations between spouses during divorce. It may be done by agreement, through a property settlement, or by judicial decree. Distributio ...
, the
custody of children Child custody is a legal term regarding '' guardianship'' which is used to describe the legal and practical relationship between a parent or guardian and a child in that person's care. Child custody consists of ''legal custody'', which is the righ ...
, the denial of
alimony Alimony, also called aliment (Scotland), maintenance (England, Ireland, Northern Ireland, Wales, Canada, New Zealand), spousal support (U.S., Canada) and spouse maintenance (Australia), is a legal obligation on a person to provide financial sup ...
, etc. Adultery is not a ground for divorce in jurisdictions which have adopted a no-fault divorce model, but may still be a factor in child custody and property disputes. The criminal status of adultery has attracted criticism, especially where there are violent penalties. The head of the United Nations expert body charged with identifying ways to eliminate laws that discriminate against women or are discriminatory to them in terms of implementation or impact, Kamala Chandrakirana, has stated that: "Adultery must not be classified as a criminal offence at all". A joint statement by the United Nations Working Group on discrimination against women in law and in practice states that: "Adultery as a criminal offence violates women’s human rights". In Muslim countries that follow
Sharia law Sharia (; ar, شريعة, sharīʿa ) is a body of religious law that forms a part of the Islamic tradition. It is derived from the religious precepts of Islam and is based on the sacred scriptures of Islam, particularly the Quran and the H ...
for criminal justice, the punishment for adultery may be
stoning Stoning, or lapidation, is a method of capital punishment where a group throws stones at a person until the subject dies from blunt trauma. It has been attested as a form of punishment for grave misdeeds since ancient times. The Torah and Ta ...
. There are fifteen countries in which stoning is authorized as lawful punishment, though in recent times it has been legally carried out only in Iran and Somalia. Countries which follow very strict versions of Sharia law in their criminal systems include Saudi Arabia, Iran, Brunei, Afghanistan, Sudan, Pakistan, 12 of Nigeria's 36 states (in Northern Nigeria) and Qatar; although these laws are not necessarily enforced. Al-Shabaab, a jihadist fundamentalist group based in East Africa (mainly Somalia) and Yemen also implements an extreme form of Sharia.


Punishment

In jurisdictions where adultery is illegal, punishments vary from fines (for example in the US state of
Rhode Island Rhode Island (, like ''road'') is a state in the New England region of the Northeastern United States. It is the smallest U.S. state by area and the seventh-least populous, with slightly fewer than 1.1 million residents as of 2020, but it ...
) to caning in parts of Asia. In fifteen countries the punishment includes
stoning Stoning, or lapidation, is a method of capital punishment where a group throws stones at a person until the subject dies from blunt trauma. It has been attested as a form of punishment for grave misdeeds since ancient times. The Torah and Ta ...
, although in recent times it has been legally enforced only in Iran and Somalia. Most stoning cases are the result of
mob violence A riot is a form of civil disorder commonly characterized by a group lashing out in a violent public disturbance against authority, property, or people. Riots typically involve destruction of property, public or private. The property target ...
, and while technically illegal, no action is usually taken against perpetrators. Sometimes such stonings are ordered by informal village leaders who have ''de facto'' power in the community. Adultery may have consequences under civil law even in countries where it is not outlawed by the criminal law. For instance it may constitute ''fault'' in countries where the
divorce law This article is a general overview of divorce laws around the world. Every nation in the world allows its residents to divorce under some conditions except the Philippines (though Muslims in the Philippines have the right to divorce) and the Vati ...
is fault based or it may be a ground for
tort A tort is a civil wrong that causes a claimant to suffer loss or harm, resulting in legal liability for the person who commits the tortious act. Tort law can be contrasted with criminal law, which deals with criminal wrongs that are punishable ...
. In some jurisdictions, the "intruder" (the third party) is punished, rather than the adulterous spouse. For instance art 266 of the Penal Code of South Sudan reads: "Whoever, has consensual sexual intercourse with a man or woman who is and whom he or she has reason to believe to be the spouse of another person, commits the offence of adultery ... Similarly, under the adultery law in India (Section 497 of the Indian Penal Code, until overturned by the Supreme Court in 2018) it was a criminal offense for a man to have consensual sexual intercourse with a married woman, without the consent of her husband (no party was criminally punished in case of adultery between a married man and an unmarried woman).


Asia

Adultery is a crime in the
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
. In the Philippines, the law differentiates based on the gender of the spouse. A wife can be charged with adultery, while a husband can only be charged with the related crime of concubinage, which is more loosely defined (it requires either keeping the mistress in the family home, or cohabiting with her, or having sexual relations under scandalous circumstances). There are currently proposals to decriminalize adultery in the Philippines. Adultery was a crime in Japan until 1947, in
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korean Peninsula and sharing a land border with North Korea. Its western border is formed by the Yellow Sea, while its eas ...
until 2015, and in
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
until 2020. In 2015, South Korea's Constitutional Court overturned the country's law against adultery. Previously, adultery was criminalized in 1953, and violators were subject to two years in prison, with the aim of protecting women from divorce. The law was overturned because the court found that adultery is a private matter in which the state should not intervene. In China, punishments for adultery were differentiated based on gender of the spouse until 1935. Adultery is no longer a crime in the
People's Republic of China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
, but is a ground for divorce. In
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
, adultery was a criminal offense before 2020. The law was challenged in 2002 when it was upheld by the
Constitutional Court A constitutional court is a high court that deals primarily with constitutional law. Its main authority is to rule on whether laws that are challenged are in fact unconstitutional, i.e. whether they conflict with constitutionally established ...
. Arguments were heard again by the court in March 2020, and the court ruled the law unconstitutional on 29 May 2020. Twelve of fifteen justices issued a concurring opinion, two others concurred in part, and one dissented. The Legislative Yuan amended the on 31 May 2021, removing the article criminalizing adultery entirely. During Qing rule in Taiwanv (1683 to 1895), the husband or his relatives could bring charges. The standard sentence was ninety lashes for each of the accused. The woman could be sold or divorced. The matter could be settled out of court, with bodily harm to the accused or assorted punishments affecting his social standing. Under Japanese rule, only the husband could bring charges. The accused could be sentenced to two years imprisonment. Wife selling became illegal, although private settlements still occurred. In
Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's fifth-most populous country, with a population of almost 243 million people, and has the world's second-lar ...
, adultery is a crime under the
Hudood Ordinance The Hudood Ordinances (Urdu ; also Romanized Hadood, Hadud, Hudud; singular form is ''Hadh'' or ''hadd'') are laws in Pakistan that were enacted in 1979 as part of then military ruler Zia-ul-Haq's "Islamisation" process. It replaced parts of the ...
, promulgated in 1979. The Ordinance sets a maximum penalty of
death Death is the irreversible cessation of all biological functions that sustain an organism. For organisms with a brain, death can also be defined as the irreversible cessation of functioning of the whole brain, including brainstem, and brain ...
. The Ordinance has been particularly controversial because it requires a woman making an accusation of
rape Rape is a type of sexual assault usually involving sexual intercourse or other forms of sexual penetration carried out against a person without their consent. The act may be carried out by physical force, coercion, abuse of authority, or ...
to provide extremely strong evidence to avoid being charged with adultery herself. A conviction for rape is only possible with evidence from no fewer than four witnesses. In recent years high-profile rape cases in Pakistan have given the Ordinance more exposure than similar laws in other countries. Similar laws exist in some other Muslim countries, such as
Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in Western Asia. It covers the bulk of the Arabian Peninsula, and has a land area of about , making it the fifth-largest country in Asia, the second-largest in the A ...
and
Brunei Brunei ( , ), formally Brunei Darussalam ( ms, Negara Brunei Darussalam, Jawi: , ), is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its South China Sea coast, it is completely surrounded by t ...
. On 27 September 2018, the Supreme Court of India ruled that adultery is not a crime. Before 2018, adultery was defined as sex between a man and a woman without the consent of the woman's husband. The man was prosecutable and could be sentenced for up to five years (even if he himself was unmarried) whereas the married woman couldn't be jailed. Men have called the law
gender discrimination Sexism is prejudice or discrimination based on one's sex or gender. Sexism can affect anyone, but it primarily affects women and girls.There is a clear and broad consensus among academic scholars in multiple fields that sexism refers primaril ...
in that women cannot be prosecuted for adultery and the National Commission of Women has criticized the British era law of being anti-feminist as it treats women as the property of their husbands and has consequently recommended deletion of the law or reducing it to a civil offense. Extramarital sex without the consent of one's partner can be a valid grounds for monetary penalty on government employees, as ruled by the Central Administrative Tribunal. In Southwest Asia, adultery has attracted severe sanctions, including the death penalty. In some places, such as
Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in Western Asia. It covers the bulk of the Arabian Peninsula, and has a land area of about , making it the fifth-largest country in Asia, the second-largest in the A ...
, the method of punishment for adultery is
stoning Stoning, or lapidation, is a method of capital punishment where a group throws stones at a person until the subject dies from blunt trauma. It has been attested as a form of punishment for grave misdeeds since ancient times. The Torah and Ta ...
to death. Proving adultery under Muslim law can be a very difficult task as it requires the accuser to produce four eyewitnesses to the act of sexual intercourse, each of whom should have a good reputation for truthfulness and honesty. The criminal standards do not apply in the application of social and family consequences of adultery, where the standards of proof are not as exacting. Sandra Mackey, author of ''The Saudis: Inside the Desert Kingdom'', stated in 1987 that in Saudi Arabia, "unlike the tribal rights of a father to put to death a daughter who has violated her chastity, death sentences under Koranic law or adulteryare extremely rare." In regions of Iraq and Syria under ISIL, there have been reports of floggings as well as execution of people who engaged in adultery. The method of execution was typically by
stoning Stoning, or lapidation, is a method of capital punishment where a group throws stones at a person until the subject dies from blunt trauma. It has been attested as a form of punishment for grave misdeeds since ancient times. The Torah and Ta ...
. ISIL would not merely oppose adultery but also oppose behavior that from their point of view could lead to adultery, such as women not being covered, people of the opposite sex socializing with one another, or even female mannequins in store windows.


Europe

Adultery is no longer a crime in any European country. Adultery in English law was not a criminal offence in secular law from the later twelfth century until the seventeenth century. It was punishable under ecclesiastical law from the twelfth century until jurisdiction over adultery by ecclesiastical courts in England and Wales was abolished in England and Wales (and some British territories of the British Empire) by the
Matrimonial Causes Act 1857 The Matrimonial Causes Act 1857 was an Act of the Parliament of the United Kingdom. The Act reformed the law on divorce, moving litigation from the jurisdiction of the ecclesiastical courts to the civil courts, establishing a model of marriage ...
. However, in English and Welsh common law of
tort A tort is a civil wrong that causes a claimant to suffer loss or harm, resulting in legal liability for the person who commits the tortious act. Tort law can be contrasted with criminal law, which deals with criminal wrongs that are punishable ...
it was possible from the early seventeenth century for a spouse to prosecute an adulterer for damages on the grounds of
loss of consortium Loss of consortium is a term used in the law of torts that refers to the deprivation of the benefits of a family relationship due to injuries caused by a tortfeasor. In this context, the word ''consortium'' means "(the right of) association and fe ...
until the Law Reform (Miscellaneous Provisions) Act 1970. Adultery was also illegal under secular statute law for the decade in which the Commonwealth (Adultery) Act (1650) was in force. Among the last Western European countries to decriminalise adultery were
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
(1969),
West Germany West Germany is the colloquial term used to indicate the Federal Republic of Germany (FRG; german: Bundesrepublik Deutschland , BRD) between its formation on 23 May 1949 and the German reunification through the accession of East Germany on 3 O ...
(1969),
Malta Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies ...
(1973),
Luxembourg Luxembourg ( ; lb, Lëtzebuerg ; french: link=no, Luxembourg; german: link=no, Luxemburg), officially the Grand Duchy of Luxembourg, ; french: link=no, Grand-Duché de Luxembourg ; german: link=no, Großherzogtum Luxemburg is a small lan ...
(1974),
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...
(1975),
Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...
(1978),
Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...
(1982),
Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders ...
(1983),
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...
(1987), Switzerland (1989), and
Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...
(1997). In most
communist countries A communist state, also known as a Marxist–Leninist state, is a one-party state that is administered and governed by a communist party guided by Marxism–Leninism. Marxism–Leninism was the state ideology of the Soviet Union, the Cominte ...
, adultery was not a crime.
Romania Romania ( ; ro, România ) is a country located at the crossroads of Central, Eastern, and Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, Serbia to the southwest, Moldova to the east, and ...
was an exception, where adultery was a crime until 2006, though the crime of adultery had a narrow definition, excluding situations where the other spouse encouraged the act or when the act happened at a time the couple was living separate and apart; and in practice prosecutions were extremely rare. In
Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a transcontinental country located mainly on the Anatolian Peninsula in Western Asia, with a small portion on the Balkan Peninsula in ...
, adultery laws were held to be invalid in 1996/1998 because the law was deemed discriminatory as it differentiated between women and men. In 2004, there were proposals to introduce a gender-neutral adultery law. The plans were dropped, and it has been suggested that the objections from the European Union played a role. Before the 20th century, adultery was often punished harshly. In Scandinavia, in the 17th century, adultery and bigamy were subject to the death penalty, although few people were actually executed. Examples of women who have been executed for adultery in Medieval and Early Modern Europe include
Maria of Brabant, Duchess of Bavaria Maria may refer to: People * Mary, mother of Jesus * Maria (given name), a popular given name in many languages Place names Extraterrestrial *170 Maria, a Main belt S-type asteroid discovered in 1877 *Lunar maria (plural of ''mare''), large, da ...
(in 1256),
Agnese Visconti Agnese Visconti also known as Agnes (1363 – 7 February 1391) was a daughter of Bernabò Visconti and his wife Beatrice Regina della Scala. She was consort of Mantua by her marriage to Francesco I Gonzaga. Family Agnese was born in Milan, Italy ...
(in 1391), Beatrice Lascaris di Tenda (in 1418),
Anne Boleyn Anne Boleyn (; 1501 or 1507 – 19 May 1536) was Queen of England from 1533 to 1536, as the second wife of King Henry VIII. The circumstances of her marriage and of her execution by beheading for treason and other charges made her a key ...
(in 1536), and
Catherine Howard Catherine Howard ( – 13 February 1542), also spelled Katheryn Howard, was Queen of England from 1540 until 1542 as the fifth wife of Henry VIII. She was the daughter of Lord Edmund Howard and Joyce Culpeper, a cousin to Anne Boleyn (the se ...
(in 1542). The enforcement of adultery laws varied by jurisdiction. In England, the last execution for adultery is believed to have taken place in 1654, when a woman named Susan Bounty was
hanged Hanging is the suspension of a person by a noose or ligature around the neck.Oxford English Dictionary, 2nd ed. Hanging as method of execution is unknown, as method of suicide from 1325. The ''Oxford English Dictionary'' states that hanging i ...
. The
European Court of Human Rights The European Court of Human Rights (ECHR or ECtHR), also known as the Strasbourg Court, is an international court of the Council of Europe which interprets the European Convention on Human Rights. The court hears applications alleging that ...
(ECHR) has had the opportunity to rule in recent years on several cases involving the legitimacy of firing a person from their job due to adultery. These cases dealt with people working for religious organizations and raised the question of the balancing of the right of a person to respect for their private life (recognized in the EU) and the right of religious communities to be protected against undue interference by the State (recognized also in the EU). These situations must be analyzed with regard to their specific circumstances, in each case. The ECtHR had ruled both in favor of the religious organization (in the case of Obst) and in favor of the fired person (in the case of Schüth).


Latin America

Until the 1990s, most Latin American countries had laws against adultery. Adultery has been decriminalized in most of these countries, including
Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...
(1990),
Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...
(1994),
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
(1995),
Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the countr ...
(1996),
Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares with ...
(1997),
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
(2005), and Haiti (2005). In some countries, adultery laws have been struck down by courts on the ground that they discriminated against women, such as Guatemala (1996), where the Guatemalan Constitutional Court struck down the adultery law based both on the Constitution's
gender equality Gender equality, also known as sexual equality or equality of the sexes, is the state of equal ease of access to resources and opportunities regardless of gender, including economic participation and decision-making; and the state of valuing d ...
clause and on human rights treaties including CEDAW; and
Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...
in 2016. The adultery law of the Federal Criminal Code of
Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
was repealed in 2011.


Australia

Adultery is not a crime in Australia. Under federal law enacted in 1994, sexual conduct between consenting adults (18 years of age or older) is their private matter throughout Australia, irrespective of marital status. Australian states and territories had previously repealed their respective adultery criminal laws. Australia changed to no-fault divorce in 1975, abolishing adultery as a ground for divorce.


United States

The United States is one of few industrialized countries to have laws criminalizing adultery. In the United States, laws vary from state-to-state. Until the mid-20th century, most U.S. states (especially Southern and Northeastern states) had laws against fornication, adultery or
cohabitation Cohabitation is an arrangement where people who are not married, usually couples, live together. They are often involved in a romantic or sexually intimate relationship on a long-term or permanent basis. Such arrangements have become increas ...
. These laws have gradually been abolished or struck down by courts as unconstitutional. State criminal laws against adultery are rarely enforced. Federal appeals courts have ruled inconsistently as to whether these laws are unconstitutional (especially after the 2003 Supreme Court decision '' Lawrence v. Texas'') and as of 2019 the Supreme Court has not ruled directly on the issue. As of 2022, adultery is a criminal offense in 16 states, but prosecutions are rare.
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
abolished its fornication and adultery laws in 1973. States which have decriminalised adultery in recent years include
West Virginia West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geographers classify West Virginia as part of the Southern United States while the B ...
(2010),
Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...
(2013),
New Hampshire New Hampshire is a state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec to the nor ...
(2014),
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
(2018),
Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...
(2019), and
Idaho Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyomi ...
(2022). The
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
repealed its adultery law in 2003. When passing the
District of Columbia Organic Act of 1801 The District of Columbia Organic Act of 1801, officially An Act Concerning the District of Columbia (6th Congress, 2nd Sess., ch. 15, , February 27, 1801), is an organic act enacted by the United States Congress in accordance with Article 1, Sec ...
, the
6th United States Congress The 6th United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the Senate and the House of Representatives. It met at Congress Hall in Philadelphia, Pennsylvania and in Washington, D ...
extended all of the criminal laws of
Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
and
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...
to the respective territory within the District that each state had ceded to the federal government under Article I, Section VIII, and adultery had been an indictable offense in Maryland since the passage of a provincial law in 1715. The last conviction of adultery in Massachusetts was in 1983 and held that the statute was constitutional and that "no fundamental personal privacy right implicit in the concept of ordered liberty guaranteed by the United States Constitution bars the criminal prosecution of such persons dulterers" Although adultery laws are mostly found in the
conservative Conservatism is a cultural, social, and political philosophy that seeks to promote and to preserve traditional institutions, practices, and values. The central tenets of conservatism may vary in relation to the culture and civilization in ...
states (especially Southern states), there are some notable exceptions such as New York. In Oklahoma,
Michigan Michigan () is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest, upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the List of U.S. states and ...
, and
Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...
adultery is a
felony A felony is traditionally considered a crime of high seriousness, whereas a misdemeanor is regarded as less serious. The term "felony" originated from English common law (from the French medieval word "félonie") to describe an offense that resu ...
, while in the other states it is a misdemeanor. It is a Class B misdemeanor in New York and a Class I felony in Wisconsin. Penalties vary from a $10 fine (
Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
) and a $500 fine (
Rhode Island Rhode Island (, like ''road'') is a state in the New England region of the Northeastern United States. It is the smallest U.S. state by area and the seventh-least populous, with slightly fewer than 1.1 million residents as of 2020, but it ...
) to five years in prison (Oklahoma) and four years in prison (Michigan). In
South Carolina )'' Animis opibusque parati'' ( for, , Latin, Prepared in mind and resources, links=no) , anthem = " Carolina";" South Carolina On My Mind" , Former = Province of South Carolina , seat = Columbia , LargestCity = Charleston , LargestMetro = ...
, the fine for adultery is up to $500 and/or imprisonment for no more than one year (South Carolina code 16-15-60), and South Carolina divorce laws deny
alimony Alimony, also called aliment (Scotland), maintenance (England, Ireland, Northern Ireland, Wales, Canada, New Zealand), spousal support (U.S., Canada) and spouse maintenance (Australia), is a legal obligation on a person to provide financial sup ...
to the adulterous spouse. In
Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...
, adultery ("Living in open adultery", Art 798.01) is illegal; while cohabitation of unmarried couples was decriminalized in 2016. In
Alabama (We dare defend our rights) , anthem = "Alabama" , image_map = Alabama in United States.svg , seat = Montgomery , LargestCity = Huntsville , LargestCounty = Baldwin County , LargestMetro = Greater Birmingham , area_total_km2 = 135,765 ...
, adultery is a Class B misdemeanor. Adultery is a crime in Virginia, so that persons in divorce proceedings may use the Fifth Amendment. Any criminal convictions for adultery can determine alimony and asset distribution. In 2016, there was a bill in Virginia to decriminalize adultery and make it only a civil offense, but the
Virginia Senate The Senate of Virginia is the upper house of the Virginia General Assembly. The Senate is composed of 40 senators representing an equal number of single-member constituent districts. The Senate is presided over by the lieutenant governor of Virg ...
did not advance the bill. In the U.S. military, adultery is a potential court-martial offense, falling under the General article (Art. 134). The
Manual for Courts-Martial The ''Manual for Courts-Martial'' (''MCM'') is the official guide to the conduct of courts-martial in the United States military. An Executive Order of the President of the United States, the ''MCM'' details and expands on the military law establi ...
defines (para. 99) "Extramarital sexual conduct" as being: ''"Elements.(1) That the accused wrongfully engaged in extramarital conduct as described in subparagraph c.(2) with a certain person; (2) That, at the time, the accused knew that the accused or the other person was married to someone else; and (3) That, under the circumstances, the conduct of the accused was either: (i) to the prejudice of good order and discipline in the armed forces; (ii) was of a nature to bring discredit upon the armed forces; or (iii) to the prejudice of good order and discipline in the armed forces and of a nature to bring discredit upon the armed forces"''. As such, extramarital sex is not automatically an offense, it must be conducted under such circumstances that it is prejudicial to the army. The law on adultery was revised in 2019 in order to include same-sex encounters in the offense. The enforceability of adultery laws in the United States is unclear following Supreme Court decisions since 1965 relating to privacy and sexual intimacy of consenting adults. However, occasional prosecutions do occur. Six U.S. states (
Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only state ...
,
North Carolina North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, Georgia and ...
,
Mississippi Mississippi () is a state in the Southeastern region of the United States, bordered to the north by Tennessee; to the east by Alabama; to the south by the Gulf of Mexico; to the southwest by Louisiana; and to the northwest by Arkansas. Miss ...
,
New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ke ...
,
South Dakota South Dakota (; Sioux: , ) is a U.S. state in the North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Lakota and Dakota Sioux Native American tribes, who comprise a large porti ...
, and Utah) allow the possibility of the
tort A tort is a civil wrong that causes a claimant to suffer loss or harm, resulting in legal liability for the person who commits the tortious act. Tort law can be contrasted with criminal law, which deals with criminal wrongs that are punishable ...
action of
alienation of affections Alienation of affections is a common law tort, abolished in many jurisdictions. Where it still exists, an action is brought by a spouse against a third party alleged to be responsible for damaging the marriage, most often resulting in divorce. The ...
(brought by a deserted spouse against a third party alleged to be responsible for the failure of the marriage). In a highly publicized case in 2010, a woman in North Carolina won a $9 million suit against her husband's
mistress Mistress is the feminine form of the English word "master" (''master'' + ''-ess'') and may refer to: Romance and relationships * Mistress (lover), a term for a woman who is in a sexual and romantic relationship with a man who is married to a ...
. Laws against adultery in colonial America were very harsh. Despite this, there is only one known execution for adultery in American history: it occurred in the Colony of Massachusetts in 1643, when the married 18 year old Mary Latham and her extramarital lover James Britton were executed.


Criticism of adultery laws


Political arguments

Laws against adultery have been named as invasive and incompatible with principles of
limited government In political philosophy, limited government is the concept of a government limited in power. It is a key concept in the history of liberalism.Amy Gutmann, "How Limited Is Liberal Government" in Liberalism Without Illusions: Essays on Liberal Th ...
(see Dennis J. Baker, The Right Not to be Criminalized: Demarcating Criminal Law's Authority (Ashgate) chapter 2). Much of the criticism comes from libertarianism, the consensus among whose adherents is that government must not intrude into daily personal lives and that such disputes are to be settled privately rather than
prosecuted A prosecutor is a legal representative of the prosecution in states with either the common law adversarial system or the civil law inquisitorial system. The prosecution is the legal party responsible for presenting the case in a criminal trial ...
and penalized by
public entities A statutory corporation is a government entity created as a statutory body by statute. Their precise nature varies by jurisdiction, thus, they are statutes owned by a government or controlled by national or sub-national government to the (in so ...
. It is also argued that adultery laws are rooted in religious doctrines; which should not be the case for laws in a secular state.
Opponents of adultery laws regard them as painfully archaic, believing they represent sanctions reminiscent of nineteenth-century novels. They further object to the legislation of morality, especially a morality so steeped in religious doctrine. Support for the preservation of the adultery laws comes from religious groups and from political parties who feel quite independent of morality, that the government has reason to concern itself with the consensual sexual activity of its citizens … The crucial question is: when, if ever, is the government justified to interfere in consensual bedroom affairs?
There is a history of adultery laws being abused. In
Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...
, England, a somewhat common practice was for husbands to encourage their wives to seduce another man, who they would then sue or blackmail, under laws (for examples see
Criminal conversation At common law, criminal conversation, often abbreviated as ''crim. con.'', is a tort arising from adultery. "Conversation" is an old euphemism for sexual intercourse that is obsolete except as part of this term. It is similar to breach of pro ...
) prohibiting men from having sex with women married to other men.


Historical context

Historically, in most cultures, laws against adultery were enacted only to prevent women—and not men—from having sexual relations with anyone other than their spouses, with adultery being often defined as sexual intercourse between a married woman and a man other than her husband. Among many cultures the
penalty Penalty or The Penalty may refer to: Sports * Penalty (golf) * Penalty (gridiron football) * Penalty (ice hockey) * Penalty (rugby) * Penalty (rugby union) * Penalty kick (association football) * Penalty shoot-out (association football) A p ...
was—and to this day still is, as noted below
capital punishment Capital punishment, also known as the death penalty, is the state-sanctioned practice of deliberately killing a person as a punishment for an actual or supposed crime, usually following an authorized, rule-governed process to conclude that ...
. At the same time, men were free to maintain sexual relations with any women (
polygyny Polygyny (; from Neoclassical Greek πολυγυνία (); ) is the most common and accepted form of polygamy around the world, entailing the marriage of a man with several women. Incidence Polygyny is more widespread in Africa than in any ...
) provided that the women did not already have husbands or "owners". Indeed, בעל (ba`al), Hebrew for ''husband'', used throughout the
Bible The Bible (from Koine Greek , , 'the books') is a collection of religious texts or scriptures that are held to be sacred in Christianity, Judaism, Samaritanism, and many other religions. The Bible is an anthologya compilation of texts ...
, is synonymous with ''owner''. These laws were enacted in fear of
cuckoldry A cuckold is the husband of an adulterous wife; the wife of an adulterous husband is a cuckquean. In biology, a cuckold is a male who unwittingly invests parental effort in juveniles who are not genetically his offspring. A husband who is a ...
and thus
sexual jealousy Sexual jealousy is a special form of jealousy in sexual relationships, based on suspected or imminent sexual infidelity. The concept is studied in the field of evolutionary psychology. Basis Evolutionary psychologists have suggested that ther ...
. Many indigenous customs, such as female genital mutilation and even menstrual taboos, have been theorized to have originated as preventive measures against cuckolding. This arrangement has been deplored by many modern intellectuals.


Discrimination against women

Opponents of adultery laws argue that these laws maintain social norms which justify violence, discrimination and oppression of women; in the form of state sanctioned forms of violence such as
stoning Stoning, or lapidation, is a method of capital punishment where a group throws stones at a person until the subject dies from blunt trauma. It has been attested as a form of punishment for grave misdeeds since ancient times. The Torah and Ta ...
,
flogging Flagellation (Latin , 'whip'), flogging or whipping is the act of beating the human body with special implements such as whips, rods, switches, the cat o' nine tails, the sjambok, the knout, etc. Typically, flogging has been imposed on ...
or
hanging Hanging is the suspension of a person by a noose or ligature around the neck.Oxford English Dictionary, 2nd ed. Hanging as method of execution is unknown, as method of suicide from 1325. The ''Oxford English Dictionary'' states that hanging ...
for adultery; or in the form of individual acts of violence committed against women by husbands or relatives, such as
honor killings An honor killing (American English), honour killing (Commonwealth English), or shame killing is the murder of an individual, either an outsider or a member of a family, by someone seeking to protect what they see as the dignity and honor of t ...
,
crimes of passion A crime of passion (French: ''crime passionnel''), in popular usage, refers to a violent crime, especially homicide, in which the perpetrator commits the act against someone because of sudden strong impulse such as anger rather than as a premed ...
, and beatings.
UN Women The United Nations Entity for Gender Equality and the Empowerment of Women, also known as UN Women, is a United Nations entity working for gender equality and the empowerment of women. UN Women advocates for the rights of women and girls, and foc ...
has called for the decriminalization of adultery. A Joint Statement by the United Nations Working Group on discrimination against women in law and in practice in 2012, stated:
The United Nations Working Group on discrimination against women in law and in practice is deeply concerned at the criminalization and penalization of adultery whose enforcement leads to discrimination and
violence against women Violence against women (VAW), also known as gender-based violence and sexual and gender-based violence (SGBV), are violent acts primarily or exclusively committed against women or girls, usually by men or boys. Such violence is often con ...
.
Concerns exist that the existence of "adultery" as a criminal offense (and even in family law) can affect the criminal justice process in cases of domestic assaults and killings, in particular by mitigating murder to manslaughter, or otherwise proving for partial or complete defenses in case of violence. These concerns have been officially raised by the Council of Europe and the UN in recent years. Th
Council of Europe Recommendation Rec(2002)5 of the Committee of Ministers to member states on the protection of women against violence
states that member states should: (...) "57. preclude adultery as an excuse for violence within the family".
UN Women The United Nations Entity for Gender Equality and the Empowerment of Women, also known as UN Women, is a United Nations entity working for gender equality and the empowerment of women. UN Women advocates for the rights of women and girls, and foc ...
has also stated in regard to the defense of
provocation Provocation, provoke or provoked may refer to: * Provocation (legal), a type of legal defense in court which claims the "victim" provoked the accused's actions * Agent provocateur, a (generally political) group that tries to goad a desired res ...
and other similar defenses that "laws should clearly state that these defenses do not include or apply to crimes of 'honour', adultery, or domestic assault or murder."


Use of limited resources of the criminal law enforcement

An argument against the criminal status of adultery is that the resources of the law enforcement are limited, and that they should be used carefully; by investing them in the investigation and prosecution of adultery (which is very difficult) the curbing of serious violent crimes may suffer.


The importance of consent as the basis of sexual offenses legislation

Human rights organizations have stated that legislation on sexual crimes must be based on
consent Consent occurs when one person voluntarily agrees to the proposal or desires of another. It is a term of common speech, with specific definitions as used in such fields as the law, medicine, research, and sexual relationships. Consent as und ...
, and must recognize consent as central, and not trivialize its importance; doing otherwise can lead to legal, social or ethical abuses. Amnesty International, when condemning stoning legislation that targets adultery, among other acts, has referred to "acts which should never be criminalized in the first place, including consensual sexual relations between adults". Salil Shetty, Amnesty International's Secretary General, said: "It is unbelievable that in the twenty-first century some countries are condoning
child marriage Child marriage is a marriage or similar union, formal or informal, between a child under a certain age – typically 18 years – and an adult or another child. * * * * The vast majority of child marriages are between a female child and a mal ...
and marital rape while others are outlawing abortion, sex outside marriage and same-sex sexual activityeven punishable by death." The
My Body My Rights
' campaign has condemned state control over individual sexual and reproductive decisions; stating "All over the world, people are coerced, criminalized and discriminated against, simply for making choices about their bodies and their lives".


References

{{reflist Family law Human sexuality Extramarital relationships