French Verb Conjugations
| Present | Imperfect | Future | Conditional | Subjunctive | Imperfect subj. | |||
| je | vieillis | vieillissais | vieillirai | vieillirais | vieillisse | vieillisse | ||
| tu | vieillis | vieillissais | vieilliras | vieillirais | vieillisses | vieillisses | ||
| il | vieillit | vieillissait | vieillira | vieillirait | vieillisse | vieillît | ||
| nous | vieillissons | vieillissions | vieillirons | vieillirions | vieillissions | vieillissions | ||
| vous | vieillissez | vieillissiez | vieillirez | vieilliriez | vieillissiez | vieillissiez | ||
| ils | vieillissent | vieillissaient | vieilliront | vieilliraient | vieillissent | vieillissent | ||
| Passé composé | Past perfect | Future perfect | Past conditional | Past subjunctive | Pluperfect subj. | |||
| j’ | ai vieilli | avais vieilli | aurai vieilli | aurais vieilli | aie vieilli | eusse vieilli | ||
| tu | as vieilli | avais vieilli | auras vieilli | aurais vieilli | aies vieilli | eusses vieilli | ||
| il | a vieilli | avait vieilli | aura vieilli | aurait vieilli | ait vieilli | eût vieilli | ||
| nous | avons vieilli | avions vieilli | aurons vieilli | aurions vieilli | ayons vieilli | eussions vieilli | ||
| vous | avez vieilli | aviez vieilli | aurez vieilli | auriez vieilli | ayez vieilli | eussiez vieilli | ||
| ils | ont vieilli | avaient vieilli | auront vieilli | auraient vieilli | aient vieilli | eussent vieilli | ||
| Passé simple | Past anterior | Imperative | Participles | |||||
| je / j’ | vieillis | eus vieilli | (tu) | vieillis | Present | vieillissant | ||
| tu | vieillis | eus vieilli | (nous) | vieillissons | Past | vieilli | ||
| il | vieillit | eut vieilli | (vous) | vieillissez | Perfect | ayant vieilli | ||
| nous | vieillîmes | eûmes vieilli | Past imperative | |||||
| vous | vieillîtes | eûtes vieilli | (tu) | aie vieilli | Past infinitive | |||
| ils | vieillirent | eurent vieilli | (nous) | ayons vieilli | avoir vieilli | |||
| (vous) | ayez vieilli | |||||||
Vieillir is a regular -ir verb.
Antonym: rajeunir (to look/feel younger)
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