Inaudible/ɪnˈɔːdəbl/ Definition 1 of 1Pro Tip 1/3Volume Matters Inaudible implies a volume too low for human ears, not just a desire for silence. Even at max volume, the speaker's voice was inaudible. Pro Tip 2/3Not Always Quiet Background noise can render sounds inaudible, not necessarily because they are quiet. The construction noise made her voice inaudible. Pro Tip 3/3Context Clarity Inaudible often indicates that the specific words or sounds cannot be distinguished. His reply was inaudible over the phone's static.