costume

/kɔs.tym/
1.
nounmasculine

suit (formal/business or evening wear)

Il doit porter un costume pour son entretien d'embauche.

He has to wear a suit for his job interview.

Synonyms:complet, costard
2.
nounmasculine

costume; fancy dress; outfit for theater, party, or Halloween

Tu as déjà choisi ton costume pour Halloween ?

Have you already chosen your costume for Halloween?

Synonyms:déguisement
costume - French Definition & Examples