| quiet(adjective, calm, dull, close, cool) |
| muted(verb, adjective, calm, dull, close) |
| subdued(verb, adjective, calm, dull, close) |
| peaceful(adjective, calm, close, quiet, cool) |
| noiseless(adjective, close, quiet, smooth, soft) |
| silent(adjective, close, quiet, smooth, soft) |
| still(adjective, calm, close, quiet, cool) |
| soundless(adjective, close, quiet, smooth, soft) |
| low(adjective, calm, dull, close, quiet) |
| soft(adjective, calm, dull, close, quiet) |
| calm(adjective, quiet, cool, smooth, moderate) |
| lulled(verb, adjective, silent, pacified, silenced) |
| placid(adjective, calm, quiet, cool, smooth) |
| tranquil(adjective, calm, quiet, cool, smooth) |
| inaudible(adjective, dull, close, quiet, weak) |
| quieted(noun, verb, adjective, close, quiet) |
| softened(verb, quiet, weak, gentle, restrained) |
| faint(adjective, calm, close, quiet, weak) |
| muffled(verb, adjective, dull, close, quiet) |
| restful(adjective, calm, quiet, cool, smooth) |