The definition of inaudible is something that can't be heard.
Having or making no noise.
Having or making no sound.
Seldom speaking; saying little; not talkative
Very quietly. In soft tones.
Not speaking; voluntarily silent
Making or characterized by no sound or faint sound:
The definition of audible is loud enough to be heard.
Find another word for unheard. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for unheard, like: inaudible, noiseless, soundless, silent, hushed, quiet, mute, muffled, still, unrecord and unheeded.