(a.) Capable, worthy, or sure of being accepted or received with pleasure; pleasing to a receiver; gratifying; agreeable; welcome; as, an acceptable present, one acceptable to us.

OK adequate admissible adorable agreeable all right alright appetizing attractive average bearable better than nothing commonplace decent delightful desirable eligible endurable enfranchised enviable exciting fair fairish fit fitted good good enough goodish grateful gratifying likable lovable moderate mouth-watering not amiss not bad not half bad not so bad okay ordinary passable pleasant pleasing presentable pretty good provocative qualified respectable satisfactory satisfying sufficient suitable supportable taking tantalizing tempting tenable tidy to be desired tolerable toothsome unexceptionable unexceptional unimpeachable unobjectionable viable welcome winning with voice with vote workmanlike worth having worthy