Green’s Dictionary of Slang

(orig. US) all right.

1929		D. Hammett Dain Curse 168: When we reached the Temple door I had to caution him: ‘Try not breathing so hard. Everything will probably be oke’.
1931		M. Harris ‘Facing the Mob’ in Gangland Stories Feb. 🌐 It’s all Oke with me, Joe.
1933		R. Chandler ‘Blackmailers Don’t Shoot’ in Red Wind (1946) 85: Everything’s oke except Mac’s loaded.
1939		Williamstown Chron. (Vic.) 15 Apr. 2/2: As a spectacle they were ‘oke,’ but not so hot I would not think, speaking, from a business viewpoint.
1944		L. Glassop We Were the Rats 5: It’s oke. Everythin’s jake.
1951		Green & Laurie Show Biz from Vaude to Video 570: Oke – OK.