A-OK
From Longman Dictionary of Contemporary EnglishA-OKA-OK /ˌeɪ əʊˈkeɪ $ -oʊ-/ adjective American English spoken informal in good condition SYN satisfactory We took the car in for a check, and it was A-OK. —A-OK adverb Everything’s been going A-OK since Jack got home.Examples from the CorpusA-OK• George had a physical six months ago, and he was A-OK.Origin A-OK (1900-2000) all (systems) OK