adj. 25B6; adjective
the beer was passable : ADEQUATE, all right, fairly good, acceptable, satisfactory, moderately good, not (too) bad, average, tolerable, fair; mediocre, middling, ordinary, indifferent, unremarkable, unexceptional; informal OK, so-so, nothing to write home about, no great shakes, not up to much; NZ informal half-pie.
the road is still passable : NAVIGABLE, traversable, negotiable, unblocked, unobstructed, open, clear.