O.K. , okay
1
adj acceptable, accurate, adequate, all right, approved, convenient, correct, fair, fine, good, in order, middling, not bad (informal) passable, permitted, satisfactory, so-so (informal) tolerable, up to scratch (informal)
2
n agreement, approbation, approval, assent, authorization, consent, endorsement, go-ahead (informal) green light, permission, sanction, say-so (informal) seal of approval
3
vb agree to, approve, authorize, consent to, endorse, entitle, give one's consent to, give the go-ahead, give the green light, give the thumbs up (informal) pass, rubber-stamp (informal) sanction, say yes to
4
interj agreed, all right, right, roger, very good, very well, yes
Antonyms
, adj displeasing, inaccurate, inadequate, incorrect, not up to scratch (informal) poor, unacceptable, unsatisfactory, unsuitable