OK

I

(New American Roget's College Thesaurus)

adj., informal, okay, approve, endorse. See agreement, permission.Ant., objectionable.

II

(Roget's Thesaurus II) I or O.K. or okay noun 1. Informal. The approving of an action, especially when done by one in authority: allowance, approbation, approval, authorization, consent, endorsement, leave2, license, permission, permit, sanction. See ALLOW. 2. Informal. The act or process of accepting: acceptance, acquiescence, agreement, assent, consent, nod, yes. See ACCEPT. II or O.K. or okay verb Informal. To give one's consent to: allow, approbate, approve, authorize, consent, endorse, let, permit, sanction. See ALLOW. III or O.K. or okay adverb Informal. It is so; as you say or ask: absolutely, agreed, all right, assuredly, aye, gladly, indubitably, roger, undoubtedly, unquestionably, willingly, yea, yes. Informal: uh-huh, yeah, yep. Slang: right on. See AFFIRM. IV or O.K. or okay adjective Informal. Of moderately good quality but less than excellent: acceptable, adequate, all right, average, common, decent, fair, fairish, goodish, moderate, passable, respectable, satisfactory, sufficient, tolerable. Informal: tidy. See GOOD.