| reticent(adjective, close, quiet, restrained, still) |
| close(adjective, quiet, soft, restrained, still) |
| silent(adjective, close, quiet, soft, low) |
| secretive(adjective, quiet, still, shy, reserved) |
| taciturn(adjective, close, quiet, restrained, still) |
| quiet(adjective, soft, low, still, shy) |
| tight-lipped(adjective, quiet, shy, reserved, secret) |
| uncommunicative(adjective, close, quiet, soft, low) |
| tightlipped |
| close-lipped(adjective, quiet, reserved, secret, private) |
| closelipped |
| laconic(quiet, soft, still, silent, hushed) |
| mum(adjective, close, quiet, soft, low) |
| reserved(adjective, close, quiet, restrained, still) |
| sedate(adjective, reserved, silent) |
| dumb(quiet, soft, still, reticent, silent) |
| secret(adjective, quiet, reserved, private, reticent) |
| airless |
| buttoned up(verb, expression, adjective, phrasal verb, quiet) |
| cheeseparing |