1. (a.) Capable of being passed, traveled, navigated, traversed, penetrated, or the like; as, the roads are not passable; the stream is passable in boats.

2. (a.) Capable of being freely circulated or disseminated; acceptable; generally receivable; current.

3. (a.) Such as may be allowed to pass without serious objection; tolerable; admissible; moderate; mediocre.

OK acceptable accessible adequate admissible agreeable all right allowable alright attainable average better than nothing betwixt and between decent dull fair fair to middling fairish good enough goodish indifferent insipid lackluster mediocre medium middling moderate modest namby-pamby navigable negotiable not amiss not bad not half bad not so bad of a kind of a sort of sorts okay open presentable pretty good reachable respectable satisfactory so so so-so sufficient tedious tenable tidy tolerable traversable unblocked unexceptionable unexceptional unobjectionable unobstructed vapid viable wishy-washy workmanlike