1. (a.) Capable of being borne or endured; moderately good\.

2. (a.) Moderately good or agreeable; not contemptible; not very excellent or pleasing, but such as can be borne or received without disgust, resentment, or opposition; passable; as, a tolerable administration; a tolerable entertainment; a tolerable translation.

OK acceptable adequate admissible all right allowable average bearable better than nothing betwixt and between common decent dull endurable fair fair to middling fairish good enough goodish indifferent insipid lackluster livable mediocre medium middling moderate modest namby-pamby not amiss not bad not half bad not so bad of a kind of a sort of sorts okay ordinary passable presentable pretty good respectable run-of-the-mill satisfactory so so so-so sufferable sufficient supportable sustainable tedious tidy unexceptionable unexceptional unimpeachable unobjectionable vapid wishy-washy workmanlike