O.K.

This everyday term, which may be written with or without periods, is colloquial or business English for "all right," "correct," "approved." It is occasionally spelled okay, okeh. Of debatable origin, O. K. is acceptable in general speech. When used as an informal noun or verb, no one objects to it (get his O. K., O. K. the arrangement). Avoid the use of O. K. as an adjective (Things are not O. K. with us) and as an adverb (The car was running O. K.). As noun, verb, adjective, and adverb, O. K. is overused.