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Mentir conjugation: to lie, to tell a lie in every French tense (free PDF download)

French verb conjugation: 150 verbs in every tense

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.

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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)

Présent (present tense) of the verb mentir
jemens
tumens
ilment
nousmentons
vousmentez
ilsmentent

Imparfait (imperfect)

Imparfait (imperfect) of the verb mentir
jementais
tumentais
ilmentait
nousmentions
vousmentiez
ilsmentaient

Passé simple (simple past, literary)

Passé simple (simple past, literary) of the verb mentir
jementis
tumentis
ilmentit
nousmentîmes
vousmentîtes
ilsmentirent

Futur simple (simple future)

Futur simple (simple future) of the verb mentir
jementirai
tumentiras
ilmentira
nousmentirons
vousmentirez
ilsmentiront

Passé composé (compound past)

Passé composé (compound past) of the verb mentir
j’ai menti
tuas menti
ila menti
nousavons menti
vousavez menti
ilsont menti

Plus-que-parfait (pluperfect)

Plus-que-parfait (pluperfect) of the verb mentir
j’avais menti
tuavais menti
ilavait menti
nousavions menti
vousaviez menti
ilsavaient menti

Passé antérieur (past anterior)

Passé antérieur (past anterior) of the verb mentir
j’eus menti
tueus menti
ileut menti
nouseûmes menti
vouseûtes menti
ilseurent menti

Futur antérieur (future perfect)

Futur antérieur (future perfect) of the verb mentir
j’aurai menti
tuauras menti
ilaura menti
nousaurons menti
vousaurez menti
ilsauront menti

Conditionnel (conditional): mentir

Conditionnel présent (present conditional)

Conditionnel présent (present conditional) of the verb mentir
jementirais
tumentirais
ilmentirait
nousmentirions
vousmentiriez
ilsmentiraient

Conditionnel passé (past conditional)

Conditionnel passé (past conditional) of the verb mentir
j’aurais menti
tuaurais menti
ilaurait menti
nousaurions menti
vousauriez menti
ilsauraient menti

Subjonctif (subjunctive): mentir

Subjonctif présent (present subjunctive)

Subjonctif présent (present subjunctive) of the verb mentir
que jemente
que tumentes
qu’ilmente
que nousmentions
que vousmentiez
qu’ilsmentent

Subjonctif passé (past subjunctive)

Subjonctif passé (past subjunctive) of the verb mentir
que j’aie menti
que tuaies menti
qu’ilait menti
que nousayons menti
que vousayez menti
qu’ilsaient menti

Subjonctif imparfait (imperfect subjunctive)

Subjonctif imparfait (imperfect subjunctive) of the verb mentir
que jementisse
que tumentisses
qu’ilmentît
que nousmentissions
que vousmentissiez
qu’ilsmentissent

Subjonctif plus-que-parfait (pluperfect subjunctive)

Subjonctif plus-que-parfait (pluperfect subjunctive) of the verb mentir
que j’eusse menti
que tueusses menti
qu’ileût menti
que nouseussions menti
que vouseussiez menti
qu’ilseussent menti

Impératif (imperative): mentir

Impératif présent (imperative)

Impératif présent (imperative) of the verb mentir
(tu)mens
(nous)mentons
(vous)mentez

Impératif passé (past imperative)

Impératif passé (past imperative) of the verb mentir
(tu)aie menti
(nous)ayons menti
(vous)ayez menti

Infinitive, participles and gerund of mentir

Non-personal forms of the verb mentir
Infinitif présent (present infinitive)mentir
Infinitif passé (past infinitive)avoir menti
Participe présent (present participle)mentant
Participe passé (past participle)menti (never changes)
Gérondif présent (gerund, “while doing”)en mentant
Gérondif passé (past gerund)en ayant 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.

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