Search Result for "unhearable": 
Wordnet 3.0

ADJECTIVE (1)

1. impossible to hear; imperceptible by the ear;
- Example: "an inaudible conversation"
[syn: inaudible, unhearable]



WordNet (r) 3.0 (2006):

unhearable
    adj 1: impossible to hear; imperceptible by the ear; "an
           inaudible conversation" [syn: inaudible, unhearable]
           [ant: audible, hearable]