OK

v.	[1] approve , sanction , ratify , authorize , endorse , support , agree to , allow , consent to , agree to , (Colloq) give the go-ahead/green light to , give the thumbs up/the nod to , rubber-stamp
n.	[1] approval , sanction , ratification , authorization , endorsement , agreement , support , permission , consent
interj.	[1] O.K. , Okay , Fine , Yes , Definitely , Agreed , Very well , All right.
adv.	[1] all right , satisfactorily , well (enough) , adequately
adj.	[1] satisfactory , acceptable , correct , suitable , all right , fine , good , in order [2] adequate , mediocre , fair , middling , passable , tolerable , (Colloq) so so , pretty good , not bad , not great [3] well , healthy , sound , in good condition , in fine fettle , fine , all right

ok

n.	[1] Oklahoma , Sooner State [2] O.K. , okay , okey , okeh
adv.	[1] very well , fine , alright , all right
adj.	[1] all right , fine , o.k. , okay , hunky-dory