outfit (Noun) A set of clothing (with accessories). She wore a fashionable outfit with matching purse and shoes. outfit (Noun) gear consisting of a set of articles or tools for a specified purpose. outfit (Noun) Any cohesive group of people; a unit; such as a military company. outfit (Noun) A business or firm. Should we buy it here, or do you think the outfit across town will have a better deal? outfit (Noun) A sports team. outfit (Verb)