Synonyms of silent

1 Syllable

surd, shy, iced, mum, still, quiet, mute, faint, whist, hush, dumb, hushed

2 Syllables

dumber, modest, quieter, dried-up, tacit, muter, stealthiest, curbed, zipped, close, stealthier, blushful, stiller, quieting, whister, sullen, screenplay, stilling, speechless, stealthy, checked, soundless, quietest, movie, muted, stoical, dumbest, unheard, withdrawn, wordless, quieted, muting, stillest, unclear, stilled, bashful, mousy

3 Syllables

nonvocal, silentious, reserved, soft-spoken, unstated, unspoken, unvocal, aphasic, unsocial, catlike, verecund, laconic, unsounded, aphonic, invoiced, taciturn, tightlipped, footage, demurer, noiseless, indistinct, restrained, celluloid, voiceless, unboastful, aphasiac, tongueless, reticent, unspeaking, tongue-tied

4 Syllables

nonresonant, unforthcoming, closelipped, unaroused, unimpressed, inhibited, unsociable, unpronounced, self-effacing, unpretending, secretive, indifferent, close-mouthed, closemouthed, incoherent

5 Syllables

unassertive, unexpressive, inobtrusive, inconversable

6 Syllables

unarticulate, inarticulate

7 Syllables

uncommunicative, incommunicative