noun, masculine/kɔs.tym/plural: costumes
a style of dress characteristic of a particular country, period or people; an outfit or a disguise worn as fancy dress; a set of clothes appropriate for a particular occasion or task; a suit worn by a man
PIE word *ḱóm PIE word *swé Borrowed from Italian costume, from Latin cōnsuētūdinem (“custom, habit”). Doublet of consuétude and coutume.