| closemouthed(quiet, still, silent, hushed) |
| easy-going(adjective, unfriendly, antisocial) |
| hushed(quiet, still, silent, soundless) |
| muted(adjective, close, quiet, restrained, still) |
| nonvocal(quiet, still, silent, hushed) |
| not forthcoming(expression, quiet, silent, tight-lipped) |
| quiet(adjective, close, restrained, still) |
| recessive(adjective, unfriendly, reticent, unassuming) |
| restrained(adjective, quiet, cold, still) |
| retired(adjective, close, quiet, restrained) |
| shrinking(adjective, quiet, restrained, detached) |
| soundless(quiet, still, silent, hushed) |
| stuck-up(adjective, cold, unfriendly, aloof) |
| tight-lipped(quiet, reserved, reticent, silent) |
| tongue-tied(quiet, still, silent, hushed) |
| unspeaking(quiet, still, silent, hushed) |
| uppity(adjective, cold, indifferent, detached) |
| voiceless(quiet, still, silent, hushed) |
| zipped(quiet, still, silent, hushed) |