| muted(verb, adjective, dull, close, quiet) |
| dull(adjective, quiet, weak, soft, gentle) |
| indistinct(adjective, dull, quiet, weak, soft) |
| soft(adjective, dull, close, quiet, weak) |
| stifled(verb, adjective, dull, quiet, weak) |
| faint(adjective, quiet, weak, soft) |
| hushed(verb, adjective, dull, close, quiet) |
| subdued(verb, adjective, dull, close, quiet) |
| quiet(adjective, dull, close, weak, soft) |
| inaudible(adjective, dull, close, quiet, weak) |
| mute(adjective, dull, close, quiet, soft) |
| weak(adjective, dull, soft, gentle) |
| noiseless(adjective, close, quiet, soft) |
| stilled(verb, adjective, close, quiet, soft) |
| unclear(adjective, quiet, weak, soft) |
| dim(adjective, dull, quiet, weak, soft) |
| dumb(adjective, close, quiet, soft) |
| imperceptible(adjective, dull, quiet, weak, soft) |
| bated(adjective, dull, weak, soft, gentle) |
| mumbled(quiet, soft, unclear, hazy) |