Learn mentir , “to lie, to tell a lie”, and you add a very practical verb to your French: it is a useful everyday verb (number 136 of the 150 on this site). It is an irregular verb of the 3rd group with its own stems: je mens , nous mentons , and a future stem in mentir- (je mentirai ). In compound tenses it takes avoir (j’ai menti ), with the past participle menti . Below you will find every tense, example sentences and a free printable PDF.
mentir at a glance: meaning, group and auxiliary
Infinitive mentir — to lie, to tell a lie
Group 3rd group (irregular verbs)
Type Irregular verb
Auxiliary takes avoir
Construction Intransitive (no object), transitive (object with a preposition) Conjugated like partir (to leave, to depart)
Frequency No. 136 of the 150 most common French verbs The endings are in bold . Tense names are given in French with the English equivalent in parentheses; pronouns and verb forms stay in French, as you will see and hear them.
Indicatif (indicative): mentir Présent (present tense) of the verb mentir je mens tu mens il ment nous mentons vous mentez ils mentent
Imparfait (imperfect) of the verb mentir je mentais tu mentais il mentait nous mentions vous mentiez ils mentaient
Passé simple (simple past, literary) of the verb mentir je mentis tu mentis il mentit nous mentîmes vous mentîtes ils mentirent
Futur simple (simple future) of the verb mentir je mentirai tu mentiras il mentira nous mentirons vous mentirez ils mentiront
Passé composé (compound past) of the verb mentir j’ ai mentitu as mentiil a mentinous avons mentivous avez mentiils ont menti
Plus-que-parfait (pluperfect) of the verb mentir j’ avais menti tu avais menti il avait menti nous avions menti vous aviez menti ils avaient menti
Passé antérieur (past anterior) of the verb mentir j’ eus menti tu eus menti il eut menti nous eûmes menti vous eûtes menti ils eurent menti
Futur antérieur (future perfect) of the verb mentir j’ aurai menti tu auras menti il aura menti nous aurons menti vous aurez menti ils auront menti
Conditionnel (conditional): mentir Conditionnel présent (present conditional) of the verb mentir je mentirais tu mentirais il mentirait nous mentirions vous mentiriez ils mentiraient
Conditionnel passé (past conditional) of the verb mentir j’ aurais menti tu aurais menti il aurait menti nous aurions menti vous auriez menti ils auraient menti
Subjonctif (subjunctive): mentir Subjonctif présent (present subjunctive) of the verb mentir que je mente que tu mentes qu’il mente que nous mentions que vous mentiez qu’ils mentent
Subjonctif passé (past subjunctive) of the verb mentir que j’ aie menti que tu aies menti qu’il ait menti que nous ayons menti que vous ayez menti qu’ils aient menti
Subjonctif imparfait (imperfect subjunctive) of the verb mentir que je mentisse que tu mentisses qu’il mentît que nous mentissions que vous mentissiez qu’ils mentissent
Subjonctif plus-que-parfait (pluperfect subjunctive) of the verb mentir que j’ eusse menti que tu eusses menti qu’il eût menti que nous eussions menti que vous eussiez menti qu’ils eussent menti
Impératif (imperative): mentir Impératif présent (imperative) of the verb mentir (tu) mens (nous) mentons (vous) mentez
Impératif passé (past imperative) of the verb mentir (tu) aie menti (nous) ayons menti (vous) ayez menti
Example sentences with mentir Real French sentences, with the conjugated form in bold, followed by the tense.
Watch out with mentir Use avoir
In compound tenses mentir takes avoir (j’ai menti). The participle menti agrees only with a direct object placed before the verb.
Irregular stems
Learn the stems, not the endings: the present is je mens / nous mentons / ils mentent, and the future and conditional use mentir- (je mentirai, je mentirais).
Verbs that conjugate like mentir See also all verbs sorted by group and the 150 most used French verbs .
Review the French tenses Questions about mentir How do you conjugate mentir (to lie, to tell a lie) in the present tense? In the présent: je mens, tu mens, il ment, nous mentons, vous mentez, ils mentent.
Does mentir take être or avoir in the passé composé? mentir takes avoir in compound tenses: j’ai menti, nous avons menti. The past participle is menti.
What are the future and conditional forms of mentir? Futur simple: je mentirai. Conditionnel présent: je mentirais. Both are built on the same stem (mentir-).
Print it
The complete conjugation chart of mentir on A4 sheets in black and white, ready for your binder or flashcards.
Download the PDF