| mute(adjective, close, quiet, soft, low) |
| buttoned up(expression, adjective, close, quiet, soft) |
| clammed up(expression, adjective, close, quiet, soft) |
| reticent(adjective, close, quiet, soft, low) |
| close(adjective, quiet, soft, low, restrained) |
| closed up(expression, adjective, close, quiet, restrained) |
| dumb(adjective, close, quiet, soft, low) |
| dummied up(expression, adjective, close, quiet, restrained) |
| hush(adjective, close, quiet, restrained, still) |
| hushed(adjective, close, quiet, soft, low) |
| iced(adjective, close, quiet, restrained, still) |
| inconversable(adjective, close, quiet, restrained, still) |
| muffled(adjective, close, quiet, soft, low) |
| muted(adjective, close, quiet, soft, low) |
| noiseless(adjective, close, quiet, soft, low) |
| nonvocal(adjective, close, quiet, restrained, still) |
| not talkative(expression, adjective, close, quiet, restrained) |
| reserved(adjective, close, quiet, soft, low) |
| silenced(adjective, silent, muffled, whist) |
| silentious(adjective, close, quiet, restrained, still) |