Languages › French How to Conjugate the Irregular French Verb 'Dormir' Share Flipboard Email Print Hero Images / Getty Images French Grammar Pronunciation & Conversation Vocabulary Resources For Teachers By ThoughtCo Updated February 18, 2020 Dormir ("to sleep") is a very common, irregular -ir verb in French. Below are the simple conjugations of the verb dormir; they do not include the compound tenses, which consist of a form of the auxiliary verb with the past participle.Dormir BasicsWithin irregular -ir verbs, there are some patterns. Two groups exhibit similar characteristics and conjugation patterns. Then there is a final, large category of extremely irregular -ir verbs that follow no pattern. Dormir lies in the first group of irregular -ir verbs that display a pattern. It includes dormir, mentir, partir, sentir, servir, sortir, and all of their derivatives, such as repartir. All of these verbs share this characteristic: They all drop the last letter of the radical (root) in the singular conjugations. For instance, the first-person singular of dormir is je dors (no "m"), and the first-person plural is nous dormons, which retains the "m" from the root. The more you can recognize these patterns, the easier it will be to remember conjugations.Conjugation PatternsGenerally speaking, most French verbs ending in -mir, -tir, or -vir are conjugated this way. Such verbs include:Dormir > to sleepEndormir > to put/send to sleepRedormir > to sleep some moreRendormir > to put back to sleepDépartir > to accordPartir > to leaveRepartir > to restart, set off againConsentir > to consentPressentir > to have a premonition Ressentir > to feel, senseSentir > to feel, to smellmentir > to lieSe repentir > to repentServir > to serve, to be usefulSortir > to go outSimple Conjugations of the Irregular French Verb "Dormir"Use the chart below to learn and memorize the conjugations of dormir in its various tenses and moods. PresentFutureImperfectPresent Participlejedorsdormiraidormaisdormanttudorsdormirasdormais ildortdormiradormaitPassé Composénousdormonsdormironsdormions Auxiliary verb avoirvousdormezdormirezdormiez Past participle dormiilsdormentdormirontdormaient SubjunctiveConditionalPassé SimpleImperfect Subjunctivejedormedormiraisdormisdormissetudormesdormiraisdormisdormissesildormedormiraitdormitdormîtnousdormionsdormirionsdormîmesdormissionsvousdormiezdormiriezdormîtesdormissiezilsdormentdormiraientdormirentdormissent Imperativetudorsnous dormonsvousdormezConjugating Dormir vs. Sortir vs. PartirAs noted, dormir is conjugated similarly to other French verbs ending in-mir, -tir, or -vir. Below is a side-by-side comparison of dormir versus sortir verus partir in the present tense. Dormir (to sleep)Sortir (to go out)Partir (to leave) Je dors sur un matelas dur. I sleep on a hard mattress.Je sors tous les soirs.I go out every night.Je pars à midi.I'm leaving at noon. Dormez-vous d'un sommeilléger ?Do you sleep lightly?Sortez-vous maintenant?Are you going out now?Partez-vous bientôt?Are you leaving soon?jedors sorspart tudors sorspars ildort sortpart nous dormons sortonspartons vousdormez sortezpartons ilsdorment sortentpartent Examples of DormirIt can be helpful in your studies to see how dormir is used in phrases, as in these examples, which show the French phrase followed by the translation in English :Avoir envie de dormir > to feel sleepy / to feel like sleepingDormir d'un sommeil profond / lourd / de plomb > to be a heavy sleeper / to be fast asleep, to be sound asleep, to be in a deep sleepDormir à poings fermés > to be fast asleep, to be sleeping like a babyReview these conjugations and examples and soon you'll be en train de dormir (sleeping soundly) the night before a French language test or a meeting with a French-speaking friend.