In linguistics, irrealis moods (abbreviated IRR) are the main set of grammatical moods that indicate that a certain situation or action is not known to have happened as the speaker is talking. This contrasts with the realis moods.

Every language has a formula for the unreal. Some languages incorporate several different forms of the irrealis moods, especially among Algonquian languages such as Blackfoot.^[1]

List of irrealis moods

Mood	Event, as intended by speaker	Example	Found in
Subjunctive	Event is considered unlikely (mainly used in dependent clauses).	"If I loved you...", "May I love you"	Latin Romance languages
Conditional (COND)	Event depends upon another condition.	"I would love you"	English German Romance languages Icelandic Irish
Optative	Event is hoped, expected, or waited.	"May I be loved!"	Albanian Ancient Greek Sanskrit Finnish Avestan
Jussive (JUS)	Event is pleaded, implored or asked.	"Everyone should be loved"	Arabic Esperanto
Potential (POT)	Event is probable or considered likely	"She probably loves me"	Finnish Japanese Sanskrit Sami languages
Imperative and Prohibitive	Event is directly ordered or requested by the speaker. Prohibitive is the negation of an imperative statement, i.e., the speaker prohibits an event (orders to it not occur).	"Love me!", "Do not love me"	English Seri Latin Portuguese (Portuguese has distinct Imperative and Prohibitive moods)
Desiderative	Event is desired/wished by the speaker	"I wish she love me."	Sanskrit Japanese
Dubitative	Event is uncertain, doubtful, dubious.	"I think she loves me."	Ojibwe Turkish
Hypothetical	Event is hypothetical, or it is counterfactual, but possible	"I might love you [if...]"	Russian Lakota
Presumptive	Event is assumed, presupposed by the speaker	There is no exact English example, although it could be translated as: "[Even] if I loved you [...]"	Romanian
Permissive	Event is permitted by the speaker.[2]	"You may [not] love me..."	Lithuanian (as a form of optative mood)
Admirative (MIR)	Event is surprising or amazing (literally or in irony or sarcasm).	"Wow! She loves me!"	Turkish Bulgarian Macedonian Albanian Megleno-Romanian
Hortative	Event is exhorted, implored, insisted or encouraged by speaker.	"Let us love!"	Latin (as a form of jussive)
Eventive	Event is likely but depends upon a condition. It is a combination of the potential and the conditional moods.	"I would probably love you, if [...]"	Finnish (in the epic poem Kalevala Estonian, in some dialects)
Precative (PREC)	Event is requested by the speaker	"Will you pass me the salt?"
Volitive (VOL)	Event is desired, wished or feared by the speaker.
Inferential (INFER or INFR)	Event is nonwitnessed, and not confirmed.	There is no exact English example, although it could be translated as: "She is said to love me"	Turkish Bulgarian (Inferential mood is called "renarrative mood") Estonian (It is called "oblique mood")
Necessitative	Event is necessary, or it is both desired and encouraged. It is a combination of hortative and jussive.		Armenian Turkish
Interrogative (INT)	Event is asked or questioned by the speaker		Welsh Nenets

Subjunctive

The subjunctive mood, sometimes called conjunctive mood, has several uses in dependent clauses. Examples include discussing hypothetical or unlikely events, expressing opinions or emotions, or making polite requests (the exact scope is language-specific). A subjunctive mood exists in English, but it often is not obligatory. Example: "I suggested that Paul eat an apple", Paul is not in fact eating an apple. Contrast this with the sentence "Paul eats an apple", where the verb "to eat" is in the present tense, indicative mood. Another way, especially in British English, of expressing this might be "I suggested that Paul should eat an apple", derived from "Paul should eat an apple."

Other uses of the subjunctive in English, as in "And if he be not able to bring a lamb, then he shall bring for his trespass..." (KJV Leviticus 5:7), have become archaic. Statements such as "I shall ensure that he leave immediately" often sound overly formal, and often have been supplanted by constructions with the indicative, such as "I'll make sure [that] he leaves immediately". (In other situations, the verb form for subjunctive and indicative may be identical: "I'll make sure [that] you leave immediately.)

The subjunctive mood figures prominently in the grammar of the Romance languages, which require this mood for certain types of dependent clauses. This point commonly causes difficulty for English speakers learning these languages.

In certain other languages, the dubitative or the conditional moods may be employed instead of the subjunctive in referring to doubtful or unlikely events (see the main article).

Conditional

The conditional mood (abbreviated COND) is used to speak of an event whose realization is dependent upon another condition, particularly, but not exclusively, in conditional sentences. In Modern English, it is a periphrastic construction, with the form would + infinitive, e.g., I would buy. In other languages, such as Spanish or French, verbs have a specific conditional inflection. This applies also to some verbs in German, in which the conditional mood is conventionally called Konjunktiv II, differing from Konjunktiv I. Thus, the conditional version of "John eats if he is hungry" is:

English: John would eat if he were hungry

German: Johannes äße, wenn er Hunger hätte

or: Johannes würde essen, wenn er Hunger hätte

French: Jean mangerait s'il avait faim

Spanish: Juan comería si tuviera hambre

Portuguese: João comeria se tivesse fome

Italian: Giovanni mangerebbe se avesse fame

Swedish: Johan skulle äta, om han var hungrig

Danish: Johan ville spise, hvis han var sulten

Norwegian Bokmål: Johan ville spise, hvis han var sulten

Norwegian Nynorsk: Johan ville eta om han var svolten

Icelandic: Jóhann myndi borða ef hann væri svangur

Dutch: Johannes zou eten mocht hij honger hebben

Irish: D'íosfadh Seán rud dá mbeadh ocras air

In the Romance languages, the conditional form is used primarily in the apodosis (main clause) of conditional clauses, and in a few set phrases where it expresses courtesy or doubt. The main verb in the protasis (dependent clause) is either in the subjunctive or in the indicative mood. However, this is not a universal trait: among others in German (as above) and in Finnish the conditional mood is used in both the apodosis and the protasis. A further example is the sentence "I would buy a house if I earned a lot of money", where in Finnish both clauses have the conditional marker -isi-: Ostaisin talon, jos ansaitsisin paljon rahaa, just like in Hungarian, which uses the marker -na/-ne/-ná/-né: Vennék egy házat, ha sokat keresnék. In Polish the conditional marker -by also appears twice: Kupiłbym dom, gdybym zarabiał dużo pieniędzy. Because English is used as a lingua franca, a similar kind of doubling of the word would is a fairly common way to misuse an English language construction.

In French, while the standard language requires the indicative in the dependent clause, using the conditional mood in both clauses is frequent among uneducated speakers: Si j'aurais su, je ne serais pas venu instead of Si j'avais su, je ne serais pas venu ("If I had known, I wouldn't have come"). However, this usage is heavily stigmatized. Interestingly, in the literary language, past unreal conditional sentences as above may take the pluperfect subjunctive in one clause or both, so that the following sentences are all valid and have the same meaning as the preceding example: Si j'eusse su, je ne serais pas venu; Si j'avais su, je ne fusse pas venu; Si j'eusse su, je ne fusse pas venu.

In English, too, the would + infinitive construct can be employed in main clauses, with a subjunctive sense: "If you would only tell me what is troubling you, I might be able to help".

Optative

The optative mood expresses hopes, wishes or commands. Other uses may overlap with the subjunctive mood. Few languages have an optative as a distinct mood; some that do are Albanian, Ancient Greek, Sanskrit, Finnish, and Avestan.

In Finnish, the mood may be called an "archaic" or "formal imperative", even if it has other uses; nevertheless, it at least expresses formality. For example, the ninth Article of the Universal Declaration of Human Rights begins with Älköön ketään pidätettäkö mielivaltaisesti (glossed, NEG.IMP.3SG anyone.PART arrest.IMP arbitrarily), "No one shall be arrested arbitrarily" (literally, "Not anyone shall be arrested arbitrarily"), where älköön pidätettäkö "shall not be arrested" is the imperative of ei pidätetä "is not arrested". Also, using the conditional mood -isi- in conjunction with the clitic -pa yields an optative meaning: olisinpa "if only I were". Here, it is evident that the wish has not been fulfilled and probably will not be.

In Sanskrit, the optative is formed by adding the secondary endings to the verb stem. The optative, as other moods, is found in active voice and middle voice. Examples: bhares "may you bear" (active) and bharethaas "may you bear [for yourself]" (middle). The optative may not only express wishes, requests and commands, but also possibilities, e.g., kadaacid goshabdena budhyeta "he might perhaps wake up due to the bellowing of cows",^[3] doubt and uncertainty, e.g., katham vidyaam Nalam "how would I be able to recognize Nala?" The optative may further be used instead of a conditional mood.

Jussive

The jussive mood (abbreviated JUS) expresses plea, insistence, imploring, self-encouragement, wish, desire, intent, command, purpose or consequence. In some languages, this is distinguished from the cohortative mood in that the cohortative occurs in the first person and the jussive in the second or third. It is found in Arabic, where it is called the مجزوم (majzūm), and in the constructed language Esperanto. The rules governing the jussive in Arabic are somewhat complex.

Potential

The potential mood (abbreviated POT) is a mood of probability indicating that, in the opinion of the speaker, the action or occurrence is considered likely. It is used in many languages, including in Finnish, Japanese, in Sanskrit and in the Sami languages. (In Japanese it is often called something like tentative, since potential is used to refer to a voice indicating capability to perform the action.)

In Finnish, it is mostly a literary device, as it has virtually disappeared from daily spoken language in most dialects. Its suffix is -ne-, as in *men + ne + e → mennee "(s/he/it) will probably go". Some kinds of consonant clusters simplify to geminates. This simplification occurs progressively (*rne → rre) with the resonant consonants l, r, and s, and regressively with stops (*tne → nne) and is meant to prevent the violation of phonotactical rules concerning sonority hierarchy. For example, korjata → *korjat + ne + t → korjannet "you will probably fix", or tulla → *tul + ne + e → tullee "s/he/it will probably come". The potential mood can be used only in present and perfect tenses. The verb ole- "be" is replaced by lie, so that "(it) is probably" is lienee (not *ollee). Thus, in the perfect tense, which is formed with an auxiliary verb, the auxiliary verb lie is used instead of ole- as liene-, e.g., lienet korjannut "you have probably fixed" (not *ollet korjannut). In spoken language, the word kai "probably" is used instead, e.g., se kai tulee "he probably comes", instead of hän tullee.

Imperative

The imperative mood expresses direct commands, requests, and prohibitions. In many circumstances, using the imperative mood may sound blunt or even rude, so it is often used with care. Example: "Paul, do your homework now". An imperative is used to tell someone to do something without argument.

Many languages, including English, use the bare verb stem to form the imperative (such as "go", "run", "do"). Other languages, such as Seri and Latin, however, use special imperative forms.

In English, second person is implied by the imperative except when first-person plural is specified, as in "Let's go" ("Let us go").

The prohibitive mood, the negative imperative may be grammatically or morphologically different from the imperative mood in some languages. It indicates that the action of the verb is not permitted, e.g., "Do not go!" (archaically, "Go not!"). In Portuguese and Spanish, for example, the forms of the imperative are only used for the imperative itself, e.g., "vai embora!" "¡vete!" ("leave!"), whereas the subjunctive is used to form negative commands, e.g., "não vás embora!" "¡no te vayas!" ("don't leave!").

In English, the imperative is sometimes used to form a conditional sentence: e.g., "Go eastwards a mile, and you will see it" means "If you go eastward a mile, you will see it".

Desiderative

Whereas the optative expresses hopes, the desiderative mood expresses wishes and desires. Desires are what we want to be the case; hope generally implies optimism toward the chances of a desire's fulfillment. If someone desires something but is pessimistic about its chances of occurring, then one desires it but does not hope for it. Few languages have a distinct desiderative mood; two that do are Sanskrit and Japanese.

In Japanese the verb inflection -tai expresses the speaker's desire, e.g., watashi wa asoko ni ikitai "I want to go there". This form is treated as a pseudo-adjective: the auxiliary verb garu is used by dropping the end -i of an adjective to indicate the outward appearance of another's mental state, in this case the desire of a person other than the speaker (e.g. Jon wa tabetagatte imasu "John appears to want to eat").

In Sanskrit, the infix -sa-, sometimes -isa-, is added to the reduplicated root, e.g. jijiivishati "he wants to live" instead of jivati "he lives".^[4] The desiderative in Sanskrit may also be used as imminent: mumuurshati "he is about to die".

Dubitative

The dubitative mood is used in Ojibwe, Turkish, Bulgarian and other languages. It expresses the speaker's doubt or uncertainty about the event denoted by the verb. For example, in Ojibwe, Baawitigong igo ayaa noongom translates as "he is in Baawitigong today." When the dubitative suffix -dog is added, this becomes Baawitigong igo ayaadog noongom, "I guess he must be in Baawitigong."^[5]

Presumptive

E.g.: There is no exact English example, although it could be translated as: "[Even] If I loved you [...]"

The presumptive mood is used in Romanian to express presupposition or hypothesis, regardless of the fact denoted by the verb, as well as other more or less similar attitudes: doubt, curiosity, concern, condition, indifference, inevitability. For example, acolo s-o fi dus "he might have gone there" shows the basic presupposition use, while the following excerpt from a poem by Eminescu shows the use both in a conditional clause de-o fi "suppose it is" and in a main clause showing an attitude of submission to fate le-om duce "we would bear".

De-o fi una, de-o fi alta... Ce e scris și pentru noi,

Bucuroși le-om duce toate, de e pace, de-i război.

Be it one, be it the other... Whatever fate we have,

We will gladly go through all, be it peace or be it war

Hortative

The hortative mood (alternatively, "hortatory") is used to express plea, insistence, imploring, self-encouragement, wish, desire, intent, command, purpose or consequence. It does not exist in English, but phrases such as "let us" are often used to denote it. In Latin, it is interchangeable with the jussive.

Inferential

The inferential mood (abbreviated INFER or INFR) is used to report a nonwitnessed event without confirming it, but the same forms also function as admiratives in the Balkan languages in which they occur. The inferential mood is used in some languages such as Turkish to convey information about events that were not directly observed or were inferred by the speaker. When referring to Bulgarian and other Balkan languages, it is often called renarrative mood; when referring to Estonian, it is called oblique mood. The inferential is usually impossible to distinguish when translated into English. For instance, indicative Bulgarian той отиде (toy otide) and Turkish o gitti translates the same as inferential той отишъл (toy otishal) and o gitmiş — with the English indicative he went.^[6] Using the first pair, however, implies very strongly that the speaker either witnessed the event or is very sure that it took place. The second pair implies either that the speaker did not in fact witness it taking place, that it occurred in the remote past, or that there is considerable doubt as to whether it actually happened. If it were necessary to make the distinction, then the English constructions "he must have gone" or "he is said to have gone" would partly translate the inferential.

References

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