O.K.'ing

adjective, adverb, interjection

Origin: orig. U.S. colloq.: first known use (March 23, 1839) by C. G. Greene, editor, in the Boston Morning Post, as if abbrev. for “oll korrect,” facetious misspelling of all correct; ? altered < Scot dial. och aye, ah yes, oh yes < Gael och, ah, oh + aye

noun pl. OK's or O.K.'s

transitive verb OK'd or O.K.'d, OK'ing or O.K.'ing