inaudibly
Below hearing threshold
Inaudibly means in a way that cannot be heard.
Someone speaking inaudibly is too quiet to make out: She muttered something inaudibly under her breath.
The word often describes speech that falls below the threshold of perception—whispered, mumbled, or drowned out by other sounds.
Producing no audible noise
- noiselessProducing no sound
- muteWithout voice or sound
- voicelessHaving no voice
- wordlessLacking spoken content
unvoiced · speechless · lip-sync · mouth · silently · mutely
Speech without full voice
- murmurSoft, indistinct continuous sound
- sotto voceIn an undertone
- undertoneSubdued background quality
- mumbleSpeak softly, indistinctly
mutter · breath · soft · faint · low · subdued · hushed · gentle
Not perceived aurally
- undetectableImpossible to notice
- imperceptibleCannot be sensed
- indistinctUnclear, hard to perceive
- muffledMade quieter, less distinct
Soft whispering noise
- rustleSoft crackling sound
- sighAudible emotional breath
- humLow steady sound
- droneUnmanned flying machine
buzz · patter · murmuration · whispering · breathing · exhale
soundless
Producing no audible noise
wordless · unvoiced · speechless · lip-sync · mouth · silently · mutely
whisper
Speech without full voice
- murmurSoft, indistinct continuous sound
- sotto voceIn an undertone
- undertoneSubdued background quality
mumble · mutter · breath · soft · faint · low · subdued · hushed · gentle · pianissimo
unheard
Not perceived aurally
- undetectableImpossible to notice
- imperceptibleCannot be sensed
- indistinctUnclear, hard to perceive
muffled · indiscernible · subliminal · drowned out · lost
susurration
Soft whispering noise
drone · buzz · patter · murmuration · whispering · breathing · exhale
inaudiblyloudly
With great volume
audibly · deafeningly · thunderously · aloud · boomingly
inaudiblyaudibly
Able to be heard
conspicuously · noticeably · perceptibly · detectably · vocally
inaudiblydistinctly
In an unmistakable manner
clearly · intelligibly · articulately · plainly · unmistakably