| stilled(verb, adjective, close, quiet, soft) |
| hushed(noun, verb, adjective, close, quiet) |
| peaceful(adjective, close, quiet, soft) |
| muted(verb, adjective, close, quiet, soft) |
| subdued(verb, adjective, quiet, soft) |
| quiet(adjective, close, soft, silent) |
| restrained(verb, quiet, soft, moderated) |
| muffled(verb, adjective, close, quiet, soft) |
| buttoned up(expression, adjective, close, quiet, soft) |
| clammed up(expression, adjective, close, quiet, soft) |
| close(adjective, quiet, soft, peaceful) |
| close-mouthed(adjective, close, quiet, soft) |
| could hear a pin drop(expression, adjective, idiom, close, quiet) |
| dumb(adjective, close, quiet, soft) |
| hushful(adjective, close, quiet, soft) |
| inaudible(adjective, close, quiet, soft) |
| inobtrusive(adjective, quiet, soft, silenced) |
| low-pitched(adjective, close, quiet, soft) |
| mute(adjective, close, quiet, soft) |
| noiseless(adjective, close, quiet, soft) |