Definition of A-OK adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌeɪ əʊ ˈkeɪ//
; NAmE NAmE//ˌeɪ oʊ ˈkeɪ//
[not before noun](North American English, informal)
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in good condition; in an acceptable manner Everything's A-OK now. Word Origin 1960s (originally an astronauts' term): from all systems OK.

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