Nouns (0)

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Verbs (0)

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Adverbs (0)

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Adjectives (1)

unheard
adj. not necessarily inaudible but not heard

Fuzzynyms (0)

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Synonyms (6)

voiceless, breathed
adj. uttered without voice; "could hardly hear her breathed plea, `Help me'"; "voiceless whispers"
infrasonic
adj. having frequencies below those of audible sound
silent
adj. having a frequency below or above the range of human audibility; "a silent dog whistle"
ultrasonic, supersonic
adj. having frequencies above those of audible sound

Antonyms (0)

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