outfit (v.)
1840, from outfit (n.). Related: Outfitted; outfitting; outfitter.
outfit (n.)
1769, "act of fitting out (a ship, etc.) for an expedition," from out + fit (v.). Sense of "articles and equipment required for an expedition" first attested 1787, American English; meaning "a person's clothes" is first recorded 1852; sense of "group of people" is from 1883.