slack suit

slack suit

n (Clothing & Fashion) US casual male dress consisting of slacks and a matching shirt or jacket

Thesaurus

Noun

1.

slack suit - casual dress consisting of slacks and matching jacketpants suit, pantsuit - a pair of pants and a matching jacket worn by womensuit, suit of clothes - a set of garments (usually including a jacket and trousers or skirt) for outerwear all of the same fabric and color; "they buried him in his best suit"