Green’s Dictionary of Slang

OK adv.

also okay
[OK adj. (1)]

well; in a satisfactory manner, all right.

[US]M.M. Pomeroy Nonsense 48: Luria was a husky Seraphim, descended all O.K. front ancient Bulkins.
[US]Lantern (N.O.) 29 Sept. 3: Favetto umpired the game all O.K.
[UK] ‘Coming of Age’ in ‘F. Anstey’ Mr Punch’s Model Music Hall 116: Don’t I look slap-up – O.K. and no mistake?
[US]R. Lardner You Know Me Al (1984) 63: He got Jackson O.K. but they was only one run behind then.
[US]R. Lardner Big Town 120: I don’t want to have no passengers along till I’m sure she’s working O.K.
[US]D. Runyon ‘Gentlemen, the King!’ in Runyon on Broadway (1954) 181: The little kid King stands okay with the people.
[US]F.H. Hubbard Railroad Avenue 199: He got along okay with the trainmaster.
[UK]J. Maclaren-Ross Of Love And Hunger 210: Prospects like it O.K. but they don’t want to cough up nothing.
[UK]K. Howard Small Time Crooks 38: Me an’ the boss’ll get by O.K.
[UK]I. Fleming Diamonds Are Forever (1958) 35: If the job goes off okay.
[US]E. Torres Carlito’s Way 27: The old man got out okay.
[US]E. Bunker Animal Factory 39: Dennis must be doing okay out there.
[US]C. Hiaasen Tourist Season (1987) 19: Wiley, the asshole who writes that column. I hate the guy normally [...] But today he did okay.
[US]J. Wambaugh Golden Orange (1991) 101: Six fishermen who were doing okay from the looks of the battered buckets full of dead fish.
[UK]K. Sampson Powder 368: He generally did OK in the States.