- Antonyms:
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inaudible, unhearable
impossible to hear; imperceptible by the ear
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breathed, voiceless
uttered without voice
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infrasonic
having frequencies below those of audible sound
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silent
having a frequency below or above the range of human audibility
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silent, unsounded
not made to sound
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supersonic, ultrasonic
having frequencies above those of audible sound
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unheard
not necessarily inaudible but not heard
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imperceptible, unperceivable
impossible or difficult to perceive by the mind or senses
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quiet
free of noise or uproar; or making little if any sound
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