copaceticadj.

1919 I. Bacheller Man for Ages iv. 69 ‘As to looks I'd call him, as ye might say, real copasetic.’ Mrs. Lukins expressed this opinion solemnly... Its last word stood for nothing more than an indefinite depth of meaning.

1926 C. Van Vechten Nigger Heaven 286 Kopasetee, an approbatory epithet somewhat stronger than all right.

1934 Webster's New Internat. Dict. Eng. Lang. Copacetic, capital; snappy; prime.

1934 J. O'Hara Appointment in Samarra (1935) i. 24 You had to be a good judge of what a man was like, and the English was copacetic.

1935 N. Ersine Underworld & Prison Slang 29 Copissettic, all right, okay.

1937 Amer. Speech 12 243/1 ‘Everything is copesetic’..is synonymous with ‘O.K.’, and I believe it is used by negroes in the South.

1947 Down Beat 18 June 4 (heading) Torme not all copa-setic.

1969 Down Beat 20 Mar. 18/1 We hear two city cops chatting. ‘Well, everything seems copasetic,’ says one. ‘Yeah, we might as well move on,’ the other agrees.