
Inaudible
Volume 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.
Not Always Quiet
Background noise can render sounds inaudible, not necessarily because they are quiet.

The construction noise made her voice inaudible.
Context Clarity
Inaudible often indicates that the specific words or sounds cannot be distinguished.

His reply was inaudible over the phone's static.
Compare with
FaintIndistinctMuffleMutePerceptibleSilentSound
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension