
The , also Lewchewan or Luchuan (), are the indigenous languages of the
Ryukyu Islands, the southernmost part of the
Japanese archipelago
The Japanese archipelago ( Japanese: , ''Nihon Rettō'') is an archipelago of 14,125 islands that form the country of Japan. It extends over from the Sea of Okhotsk in the northeast to the East China and Philippine seas in the southwest al ...
. Along with the
Japanese language
is spoken natively by about 128 million people, primarily by Japanese people and primarily in Japan, the only country where it is the national language. Japanese belongs to the Japonic or Japanese- Ryukyuan language family. There have been ...
and the
Hachijō language, they make up the
Japonic language family.
Although Japanese is spoken in the Ryukyu Islands, the Ryukyu and Japanese languages are not
mutually intelligible. It is not known how many speakers of these languages remain, but
language shift
Language shift, also known as language transfer or language replacement or language assimilation, is the process whereby a speech community shifts to a different language, usually over an extended period of time. Often, languages that are percei ...
toward the use of
Standard Japanese and dialects like
Okinawan Japanese has resulted in these languages becoming
endangered;
UNESCO
The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. I ...
labels four of the languages "definitely endangered" and two others "severely endangered".
Overview
Phonologically, the Ryukyuan languages have some cross-linguistically unusual features. Southern Ryukyuan languages have a number of
syllabic consonants, including unvoiced syllabic fricatives (e.g. Ōgami
Miyako 'breast').
Glottalized consonants are common (e.g. Yuwan
Amami
The The name ''Amami-guntō'' was standardized on February 15, 2010. Prior to that, another name, ''Amami shotō'' (奄美諸島), was also used. is an archipelago in the Satsunan Islands, which is part of the Ryukyu Islands, and is southwest of ...
"horse"). Some Ryukyuan languages have phonemic central vowels, e.g. Yuwan Amami "tree". Ikema Miyako has a
voiceless nasal phoneme . Many Ryukyuan languages, like Standard Japanese and most Japanese dialects, have contrastive
pitch accent.
Ryukyuan languages are generally
SOV,
dependent-marking, modifier-head,
nominative-accusative languages, like Japanese. Adjectives are generally
bound morphemes, occurring either with noun compounding or using verbalization. Many Ryukyuan languages mark both nominatives and genitives with the same marker. This marker has the unusual feature of changing form depending on an
animacy hierarchy. The Ryukyuan languages have
topic
Topic, topics, TOPIC, topical, or topicality may refer to:
Topic / Topics
* Topić, a Slavic surname
* ''Topics'' (Aristotle), a work by Aristotle
* Topic (chocolate bar), a brand of confectionery bar
* Topic (DJ), German musician
* Topic ...
and
focus markers, which may take different forms depending on the sentential context. Ryukyuan also preserves a special verbal inflection for clauses with focus markers—this unusual feature was also found in
Old Japanese, but lost in Modern Japanese.
Classification and varieties
The Ryukyuan languages belong to the
Japonic language family, related to the
Japanese language
is spoken natively by about 128 million people, primarily by Japanese people and primarily in Japan, the only country where it is the national language. Japanese belongs to the Japonic or Japanese- Ryukyuan language family. There have been ...
.
The Ryukyuan languages are not
mutually intelligible with Japanese—in fact, they are not even mutually intelligible with each other—and thus are usually considered separate languages.
However, for socio-political and ideological reasons, they have often been classified within Japan as dialects of Japanese.
Since the beginning of
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, most mainland Japanese have regarded the Ryukyuan languages as a dialect or group of dialects of Japanese.
The Okinawan language is only 71% lexically similar to, or cognate with, standard Japanese. Even the southernmost Japanese dialect (
Kagoshima dialect) is only 72% cognate with the northernmost Ryukyuan language (Amami). The Kagoshima dialect of Japanese, however, is 80% lexically similar to Standard Japanese. There is general agreement among linguistics experts that Ryukyuan varieties can be divided into six languages, conservatively, with dialects unique to islands within each group also sometimes considered languages.
A widely accepted hypothesis among linguists categorizes the Ryukyuan languages into two groups, Northern Ryukyuan (Amami–Okinawa) and Southern Ryukyuan (Miyako–Yaeyama).
Many speakers of the Amami, Miyako, Yaeyama and Yonaguni languages may also be familiar with Okinawan since Okinawan has the most speakers and once acted as the regional standard. Speakers of Yonaguni are also likely to know the Yaeyama language due to its proximity. Since Amami, Miyako, Yaeyama, and Yonaguni are less urbanized than the Okinawan mainland, their languages are not declining as quickly as that of Okinawa proper, and some children continue to be brought up in these languages.
*
Northern Ryukyuan languages
**
Amami
The The name ''Amami-guntō'' was standardized on February 15, 2010. Prior to that, another name, ''Amami shotō'' (奄美諸島), was also used. is an archipelago in the Satsunan Islands, which is part of the Ryukyu Islands, and is southwest of ...
***
Kikai
***
Amami Ōshima
**** Northern
**** Southern
***
Tokunoshima
** Kunigami
***
Okinoerabu
***
Yoron
***
Kunigami
**
Okinawan
*
Southern Ryukyuan languages
The form one of two branches of the Ryukyuan languages. They are spoken on the Sakishima Islands in Okinawa Prefecture. The three languages are Miyako (on the Miyako Islands) and Yaeyama and Yonaguni (on the Yaeyama Islands, of the Macro-Ya ...
** Miyakoan
***
Central Miyako
***
Irabu
***
Tarama
**
Yaeyama
**
Yonaguni
Each Ryukyuan language is generally unintelligible to others in the same family. There is wide diversity among them. For example, Yonaguni has only three vowels, whereas varieties of Amami may have up to seven, excluding length distinctions. The table below illustrates the different phrases used in each language for "thank you" and "welcome", with standard Japanese provided for comparison.
Status

There is no census data for the Ryukyuan languages, and the number of speakers is unknown.
As of 2005, the total population of the Ryukyu region was 1,452,288, but fluent speakers are restricted to the older generation, generally in their 50s or older, and thus the true number of Ryukyuan speakers should be much lower.
The six Ryukyuan languages are listed in the UNESCO
Atlas of the World's Languages in Danger. UNESCO said all Ryukyuan languages are on course for extinction by 2050.
Starting in the 1890s, the Japanese government began to suppress the Ryukyuan languages as part of their policy of forced assimilation in the islands.
Children being raised in the Ryukyuan languages are becoming increasingly rare throughout the islands, and usually only occurs when the children are living with their grandparents. The Ryukyuan languages are still used in traditional cultural activities, such as
folk music
Folk music is a music genre that includes traditional folk music and the contemporary genre that evolved from the former during the 20th-century folk revival. Some types of folk music may be called world music. Traditional folk music has ...
,
folk dance,
poem
Poetry (derived from the Greek '' poiesis'', "making"), also called verse, is a form of literature that uses aesthetic and often rhythmic qualities of language − such as phonaesthetics, sound symbolism, and metre − to evoke meanings ...
and folk plays. There has also been a radio news program in the Naha dialect since 1960.
Circa 2007, in
Okinawa
is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi).
Naha is the capital and largest city ...
, people under the age of 40 have little proficiency in the native
Okinawan language.
A new
mixed language
A mixed language is a language that arises among a bilingual group combining aspects of two or more languages but not clearly deriving primarily from any single language. It differs from a creole or pidgin language in that, whereas creoles/pidgi ...
, based on Japanese and Okinawan, has developed, known as "
Okinawan Japanese".
Although it has been largely ignored by linguists and language activists, this is the language of choice among the younger generation.
Similarly, the common language now used in everyday conversations in
Amami Ōshima is not the traditional
Amami language, but rather a regional variation of Amami-accented Japanese, known as
Amami Japanese. It’s locally known as (''Ton Futsūgo'', literally meaning "potato
.e. rusticcommon language").
To try to preserve the language, the Okinawan Prefectural government proclaimed on March 31, 2006, that September 18 would be commemorated as , as the day's numerals in ''
goroawase'' spell out ''ku'' (9), ''tu'' (10), ''ba'' (8); ''kutuba'' is one of the few words common throughout the Ryukyuan languages meaning "word" or "language" (a cognate of the Japanese word ). A similar commemoration is held in the Amami region on February 18 beginning in 2007, proclaimed as by
Ōshima Subprefecture in
Kagoshima Prefecture. Each island has its own name for the event:
*
Amami Ōshima: or (also written )
*On
Kikaijima it is
*On
Tokunoshima it is or
*On
Okinoerabujima it is
*On
Yoronjima it is .
Yoronjima's ''fu'' (2) ''tu'' (10) ''ba'' (8) is the ''goroawase'' source of the February 18 date, much like with Okinawa Prefecture's use of ''kutuba''.
History
It is generally accepted that the Ryukyu Islands were populated by
Proto-Japonic speakers in the first millennium, and since then relative isolation allowed the Ryukyuan languages to diverge significantly from the varieties of Proto-Japonic spoken in Mainland Japan, which would later be known as
Old Japanese. However, the discoveries of the
Pinza-Abu Cave Man
The is a prehistoric people known from bones found in the Pinza-Abu Cave, near Ueno in Miyako Island, southern Japan. The remains appear to have the modern man anatomical type and have been dated to about 30,000 years ago,
i.e. 25,800 ± ...
, the
Minatogawa Man, and the
Yamashita Cave Man
The are the prehistoric humans known from many bones found in the Yamashita limestone cave located on the grounds of the Yamashita First Cave Site Park in Naha, Okinawa, Japan. The remains have been dated at 32,000±1000 years ago.
The most ...
as well as the
Shiraho Saonetabaru Cave Ruins suggest an earlier arrival to the island by modern humans. Some researchers suggest that the Ryukyuan languages are most likely to have evolved from a "pre-Proto-Japonic language" from the Korean peninsula. However, Ryukyuan may have already begun to diverge from Proto-Japonic before this migration, while its speakers still dwelt in
the main islands of Japan.
After this initial settlement, there was little contact between the main islands and the Ryukyu Islands for centuries, allowing Ryukyuan and Japanese to diverge as separate linguistic entities from each other.
This situation lasted until the
Kyushu-based
Satsuma Domain conquered the Ryukyu Islands in the 17th century.
The
Ryukyu Kingdom retained autonomy until 1879, when it was annexed by Japan.
The Japanese government adopted a policy of forced assimilation, appointing mainland Japanese to political posts and suppressing native culture and language.
Students caught speaking the Ryukyuan languages were made to wear a ''
dialect card'' (
方言札 ''hōgen fuda''), a method of
public humiliation.
[This punishment was taken from the 19th French language policy of Vergonha, especially by Jules Ferry, where the regional languages such as Occitan (Provençal), ]Catalan
Catalan may refer to:
Catalonia
From, or related to Catalonia:
* Catalan language, a Romance language
* Catalans, an ethnic group formed by the people from, or with origins in, Northern or southern Catalonia
Places
* 13178 Catalan, asteroid ...
, or Breton were suppressed in favor of French
French (french: français(e), link=no) may refer to:
* Something of, from, or related to France
** French language, which originated in France, and its various dialects and accents
** French people, a nation and ethnic group identified with Franc ...
; see also Welsh Not, for a similar system in Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
. The same system was also used in other parts of Japan, such as the Tōhoku region. Students who regularly wore the card would receive
corporal punishment.
In 1940, there was a political debate amongst Japanese leaders about whether or not to continue the oppression of the Ryukyuan languages, although the argument for assimilation prevailed. In the
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
era, speaking the Ryukyuan languages was officially illegal, although in practice the older generation was still monolingual.
During the
Battle of Okinawa, many Okinawans were labeled as spies and executed for speaking the Okinawan language. This policy of
linguicide lasted into the
post-war occupation of the Ryukyu Islands by the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
.
As the American occupation forces generally promoted the reforming of a separate Ryukyuan culture, many Okinawan officials continued to strive for Japanification as a form of defiance.
Nowadays, in favor of
multiculturalism
The term multiculturalism has a range of meanings within the contexts of sociology, political philosophy, and colloquial use. In sociology and in everyday usage, it is a synonym for "Pluralism (political theory), ethnic pluralism", with the tw ...
, preserving Ryukyuan languages has become the policy of
Okinawa Prefectural government
is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi).
Naha is the capital and largest city o ...
, as well as the government of
Kagoshima Prefecture's
Ōshima Subprefecture. However, the situation is not very optimistic, since the vast majority of Okinawan children are now monolingual in Japanese.
Geographic distribution
The Ryukyuan languages are spoken on the
Ryukyu Islands, which comprise the southernmost part of the
Japanese archipelago
The Japanese archipelago ( Japanese: , ''Nihon Rettō'') is an archipelago of 14,125 islands that form the country of Japan. It extends over from the Sea of Okhotsk in the northeast to the East China and Philippine seas in the southwest al ...
There are four major island groups which make up the Ryukyu Islands: the
Amami Islands, the
Okinawa Islands, the
Miyako Islands, and the
Yaeyama Islands.
The former is in the
Kagoshima Prefecture, while the latter three are in the
Okinawa Prefecture
is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi).
Naha is the capital and largest cit ...
.
Orthography

Older Ryukyuan texts are often found on stone inscriptions. ''Tamaudun-no-Hinomon'' (
玉陵の碑文 "Inscription of
Tamaudun tomb") (1501), for example. Within the
Ryukyu Kingdom, official texts were written in
kanji
are the logographic Chinese characters taken from the Chinese script and used in the writing of Japanese. They were made a major part of the Japanese writing system during the time of Old Japanese and are still used, along with the subse ...
and
hiragana
is a Japanese language, Japanese syllabary, part of the Japanese writing system, along with ''katakana'' as well as ''kanji''.
It is a phonetic lettering system. The word ''hiragana'' literally means "flowing" or "simple" kana ("simple" ori ...
, derived from Japan. However, this was a sharp contrast from Japan at the time, where
classical Chinese
Classical Chinese, also known as Literary Chinese (古文 ''gǔwén'' "ancient text", or 文言 ''wényán'' "text speak", meaning
"literary language/speech"; modern vernacular: 文言文 ''wényánwén'' "text speak text", meaning
"literar ...
writing was mostly used for official texts, only using hiragana for informal ones. Classical Chinese writing was sometimes used in Ryukyu as well, read in ''
kundoku'' (Ryukyuan) or in Chinese. In Ryukyu,
katakana was hardly used.
Historically, official documents in Ryukyuan were primarily written in a form of classical Chinese writing known as
Kanbun, while poetry and songs were often written in the Shuri dialect of
Okinawan.
Commoners did not learn kanji. ''
Omoro Sōshi'' (1531–1623), a noted Ryukyuan song collection, was mainly written in hiragana. Other than hiragana, they also used
Suzhou numerals (''sūchūma'' すうちゅうま in Okinawan), derived from China. In
Yonaguni in particular, there was a different writing system, the
Kaidā glyphs (カイダー字 or カイダーディー). Under Japanese influence, all of those numerals became obsolete.
Nowadays, perceived as "dialects", Ryukyuan languages are not often written. When they are,
Japanese characters are used in an ''ad hoc'' manner. There are no standard orthographies for the modern languages. Sounds not distinguished in the Japanese writing system, such as
glottal stops, are not properly written. Sometimes local
''kun'yomi'' are given to kanji, such as ''agari'' (あがり "east") for
東
東 (Simplified Chinese: ), meaning " east", may refer to:
* Azuma (name), a Japanese surname and given name
* Dōng, a Chinese surname
* ''Dong'' (film), a 2006 Chinese documentary film
See also
* Higashi-ku (disambiguation), for various dist ...
, ''iri'' (いり "west") for
西
西, meaning " west", may refer to:
* Radical 146 in the Kangxi Dictionary system of classifying Chinese characters
* Nishi (surname), Japanese surname
* Xi (surname), Chinese surname
See also
* Nishi-ku (disambiguation), various districts in Jap ...
, thus 西表 is
Iriomote.
Okinawa Prefectural government set up the investigative commission for orthography of ''shimakutuba'' () in 2018, and the commission proposed an unified spelling rule based on katakana for languages of Kunigami, Okinawa, Miyako, Yaeyama and Yonaguni on May 30 in 2022.
Phonology
Ryukyuan languages often share many phonological features with Japanese, including a voicing opposition for
obstruent
An obstruent () is a speech sound such as , , or that is formed by ''obstructing'' airflow. Obstruents contrast with sonorants, which have no such obstruction and so resonate. All obstruents are consonants, but sonorants include vowels as well a ...
s, CV(C) syllable structure,
moraic rhythm, and
pitch accent.
However, many individual Ryukyuan languages diverge significantly from this pan-Japonic base.
For instance, Ōgami does not have phonemic voicing in obstruents, allows CCVC syllables, and has unusual syllabic consonants such as "make".
Consonants
The Northern Ryukyuan (Amami-Okinawa) languages are notable for having
glottalic consonants.
Phonemically these are analyzed of consisting of a cluster + C, where the consonant consists of its own mora.
For instance, in the Amami dialect Yuwan the word "horse" is bimoraic.
Tsuken (Central Okinawan) restricts glottalization to glides and the vowels .
Southern Ryukyuan mostly has little to no glottalization, with some exceptions (e.g. Yonaguni).
For instance, the Irabu dialect of the Miyako language only allows glottalization with and : "then", "pipe".
Southern Ryukyuan stands out in having a number of syllabic consonants.
These consonants are contextually nucleic, becoming syllabic when not adjacent to a vowel.
Examples:
Irabu Miyako:
* "wave"
* "shell"
* "potato"
* "man"
* "daytime"
Ōgami Miyako
* "cow"
* "dust"
* "breast"
Ōgami even shows a three-way length distinction in fricatives, though across a syllable boundary:
* "child"
* "grass"
* "comb", "top"
Ikema (a Miyako dialect) has a voiceless moraic nasal phoneme , which always precedes another nasal onset and assimilates its place of articulation to the following nasal.
Vowels
Amami has high and mid central vowels.
Yonaguni only has three contrasting vowels, , and .
Suprasegmentals
The Ryukyuan languages operate based on the
mora.
Most Ryukyuan languages require words to be at least bimoraic, thus for example in Hateruma the underlying noun root "hand" becomes when it is an independent noun, though it remains as when attached to a clitic, e.g. .
[In fact, in Irabu Miyako lengthening occurs even before a clitic, thus underlying "hand" becomes independently and with attached clitic. ] However, the
syllable may still sometimes be relevant—for instance, the Ōgami topic marker takes a different form after open syllables with short vowels:
* "staff" →
* "vegetable" →
* "person" →
Ryukyuan languages typically have a
pitch accent system where some mora in a word bears the pitch accent.
They commonly either have two or three distinctive types of pitch accent which may be applied.
The category of
foot also has relevance to the accentual systems of some Ryukyuan languages, and some Miyako varieties have a cross-linguistically rare system of tonal foot.
However, Irabu Miyakoan does not have lexical accent.
Grammar
Morphology
The Ryukyuan languages consistently distinguish between the
word classes of nouns and verbs, distinguished by the fact that verbs take
inflectional morphology.
Property-concept (adjectival) words are generally
bound morphemes.
One strategy they use is compounding with a free-standing noun:
Ikema:
Yuwan:
Compounding is found in both Northern and Southern Ryukyuan, but is mostly absent from Hateruma (Yaeyama).
Another way property stems are used is by verbalization:
Yuwan Amami:
Miyako is unique in having stand-alone adjectives.
These may be formed by reduplication of the root, e.g. Irabu Miyako ''imi-'' "small" → ''imii-imi'' "small (adj.)".
They may also be compounded with a grammaticalized noun ''munu'' "thing", e.g. Irabu ''imi-munu'' 'small (thing)'.
Syntax
Ryukyuan languages are generally
SOV,
dependent-marking, modifier-head,
nominative-accusative languages.
They are also
pro-drop languages.
All of these features are shared with the Japanese language.
In many Ryukyuan languages, the nominative and genitive are marked identically, a system also found, for example, in
Austronesian languages.
However, Ryukyuan has the unusual feature that these markers vary based on an
animacy hierarchy.
Typically there are two markers of the form ''=ga'' and ''=nu'', which are distinguished based on animacy and definiteness.
In Yuwan Amami, for instance, the nominative is marked with ''=ga''/''=nu'' and the genitive by ''=ga''/''=nu''/''=Ø'' based on the following hierarchy:
In the Miyako varieties, the object in a dependent clause of clause-chaining constructions has a special marker, homophonous to a topic marker.
This might even be interpreted as another function of the topic marker.
Hateruma Yaeyama stands out in that it is a
zero-marking language
A zero-marking language is one with no grammatical marks on the dependents or the modifiers or the heads or nuclei that show the relationship between different constituents of a phrase.
Pervasive zero marking is very rare, but instances of ...
, where word order rather than case marking is important:
The Ryukyuan languages mark both
topic
Topic, topics, TOPIC, topical, or topicality may refer to:
Topic / Topics
* Topić, a Slavic surname
* ''Topics'' (Aristotle), a work by Aristotle
* Topic (chocolate bar), a brand of confectionery bar
* Topic (DJ), German musician
* Topic ...
and
focus grammatically.
The typical form of the topic marker is =, or in Southern Ryukyuan ''=ba''; the typical focus marker is ''=du''.
In some Ryukyuan languages there are many focus markers with different functions; for instance, Irabu has ''=du'' in declarative clauses, ''=ru'' in yes-no interrogative clauses, and ''=ga'' in wh-interrogative clauses.
The focus markers trigger a special verbal inflection—this typologically unusual focus construction, known as ''kakari-musubi'', was also found in
Old Japanese, but has been lost in Modern Japanese.
Examples from Yuwan Amami:
While in many Japonic languages this special inflection is often identical to the verbal inflection in relative clauses, in Yuwan Amami is different (the relative inflection is ''-n/-tan'').
There is some variation among the Ryukyuan languages as to the form of kakari-musubi—for example, in Irabu Miyako a focus marker blocks a specific verb form, rather than triggering a special inflection.
Pronouns
Thorpe (1983) reconstructs the following pronouns in Proto-Ryukyuan. For the first person, the singular and plural are assumed based on the Yonaguni reflex.
* *a, "I" (singular)
* *wa "we" (plural)
* *u, *e "you" (singular)
* *uya, *ura "you" (plural)
Cultural vocabulary
Pellard (2015)
[Pellard, Thomas. 2015. The Linguistic archeology of the Ryukyu Islands. In Heinrich, Patrick and Miyara, Shinsho and Shimoji, Michinori (eds.), ''Handbook of the Ryukyuan Languages: History, Structure, and Use'', 13-37. Berlin: DeGruyter Mouton.] reconstructs the following cultural vocabulary words for Proto-Ryukyuan.
* *kome B 'rice'
* *mai A 'rice'
* *ine B 'rice plant'
* *momi A 'unhulled rice'
* *mogi B 'wheat'
* *awa B '
foxtail millet'
* *kimi B '
broomcorn millet'
* *umo B 'taro, yam'
* * C 'field'
* *ta B 'rice paddy'
* *usi A 'cow'
* *uwa C 'pig'
* *uma B 'horse'
* *tubo A 'pot'
* *kame C 'jar'
* *pune C 'boat'
* *po A 'sail'
* * B 'paddle'
See also
*
Ryūka
*
Jōmon
Notes
References
Bibliography
*
*
*
*
Further reading
*Sanseido (1997). ''言語学大辞典セレクション:日本列島の言語'' (''Selection from the Encyclopædia of Linguistics: The Languages of the Japanese Archipelago''). "琉球列島の言語" (''The Languages of the Ryukyu Islands'').
*Ashworth, D. E. (1975). ''A generative study of the inflectional morphophonemics of the Shuri dialect of Ryukyuan''. Thesis (Ph. D.)—Cornell University, 1973.
*
*Heinrich, Patrick, Shinsho Miyara, Michinori Shimoji, eds. 2015. ''Handbook of the Ryukyuan Languages.'' Berlin: De Gruyter Mouton.
*Serafim, L. A. (1985). Shodon: the prehistory of a Northern Ryukyuan dialect of Japanese.
.l: s.n.
*Shimabukuro, Moriyo. 2007. ''The accentual history of the Japanese and Ryukyuan languages: a reconstruction''. Languages of Asia series, v. 2. Folkestone, Kent: Global Oriental.
*
*Uemura, Yukio, and Wayne P. Lawrence. 2003. ''The Ryukyuan language.'' Endangered Languages of the Pacific Rim (Series), A4-018. Osaka, Japan: ELPR.
External links
Ryukyuan language phonetic database
Okinawa Prefecture
Web archives of Okinawan Folktales Okinawa Prefectural Museum
Amami Culture Foundation
National Institute for Japanese Language and Linguistics
仲宗根政善言語資料おーりたぼーり:メーラム二(宮良言葉)の学習者のためのポッドキャスト
{{DEFAULTSORT:Ryukyuan Languages
Languages of Japan">Ryukyuan languages">
Languages of Japan
Ryukyu Islands
Culture in Okinawa Prefecture