The Collaborative International Dictionary of English v.0.48:
hearable \hearable\ adj. perceptible by the ear. Opposite of inaudible. Also See: loud, perceptible. Syn: audible. [WordNet 1.5 +PJC]WordNet (r) 3.0 (2006):
hearable adj 1: heard or perceptible by the ear; "he spoke in an audible whisper" [syn: audible, hearable] [ant: inaudible, unhearable]