| not saying boo(expression, adjective, idiom, close, quiet) |
| quiescent(adjective, close, quiet, soft) |
| reserved(adjective, close, quiet, soft) |
| reticent(adjective, close, quiet, soft) |
| secretive(adjective, close, quiet, soft) |
| silent(adjective, close, quiet, soft) |
| soft(adjective, close, quiet, peaceful) |
| soundless(adjective, close, quiet, soft) |
| speechless(adjective, close, quiet, soft) |
| still(adjective, close, quiet, soft) |
| taciturn(adjective, close, quiet, soft) |
| tight-lipped(adjective, close, quiet, soft) |
| uncommunicative(adjective, close, quiet, soft) |
| unexpressed(adjective, close, quiet, soft) |
| unspeaking(adjective, close, quiet, soft) |
| unuttered(adjective, close, quiet, soft) |
| whist(adjective, close, quiet, soft) |
| discreet(adjective, soft, silent, noiseless) |
| tasteful(quiet, soft) |
| unobtrusive(adjective, close, quiet, soft) |