| inhibited(quiet, soft, still, faint, unclear) |
| laconic(quiet, soft, still, faint, unclear) |
| mousy(quiet, soft, still, faint, unclear) |
| mum(quiet, soft, still, silent, hushed) |
| mute(quiet, soft, still, silent, hushed) |
| muted(quiet, soft, still, silent, hushed) |
| noiseless(quiet, soft, still, silent, hushed) |
| nonvocal(adjective, close, quiet, soft, restrained) |
| not talkative(expression, adjective, close, quiet, restrained) |
| quiet speechless(expression, still, faint, unclear, hushed) |
| reserved(still, hushed, soundless) |
| restrained(still, hushed, soundless) |
| reticent(still, hushed, soundless) |
| silent(adjective, close, quiet, soft, still) |
| silentious(adjective, close, quiet, restrained, still) |
| soundless(still, hushed) |
| still(hushed, soundless) |
| struck dumb(expression, adjective, close, quiet, restrained) |
| taciturn(still, hushed, soundless) |
| tongue-tied(still, hushed, soundless) |