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English definition of “OK”

OK

adjective, adverb (SATISFACTORY) (also okay)    /ˈoʊˈkeɪ, ˌoʊˈkeɪ, ˈoʊˌkeɪ/
in a satisfactory state or of a satisfactory quality; all right : Are you OK? You look pale. I hope you got home OK. OK is used to mean not bad but also not very good: Her voice is OK, but it’s nothing special.
(Definition of OK adjective, adverb (SATISFACTORY) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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