adj. 25B6; adjective
a tolerable noise level : BEARABLE, endurable, supportable, acceptable.
he had a tolerable voice : FAIRLY GOOD, passable, adequate, all right, acceptable, satisfactory, not (too) bad, average, fair; mediocre, middling, ordinary, indifferent, unremarkable, unexceptional; informal OK, so-so, nothing to write home about, no great shakes.
unacceptable.