Synonyms of nonvocal

1 Syllable
faint, low, mum, still, quiet, hushed, mute
2 Syllables
silent, wordless, soundless, unclear, mumer, muted, muffled, husher, mumbled
3 Syllables
silentious, noiseless, unspeaking, voiceless
4 Syllables
unhearable, closemouthed, inaudible
5 Syllables
imperceptible
7 Syllables
uncommunicative