| skulking(secret, private, hidden, sneak, sneaky) |
| sleep(calm, quiet, speech, silence, softness) |
| slinking(secret, private, hidden, sneak, sneaky) |
| sly(quiet, dishonest, secret, clandestine, sneaky) |
| slyly(clandestine, quietly, secretly, personally, privately) |
| smother |
| smothered |
| sneaking(dishonest, cunning, deceitful, secret, private) |
| sneaky(quiet, dishonest, cunning, secret, clandestine) |
| soft-pedal(verb, calm, dull, quiet, play) |
| soft pedal |
| speechlessness(calm, quiet, speech, silence, softness) |
| squash |
| stealthily(clandestine, quietly, secretly, personally, privately) |
| stifled |
| stillness(calm, quiet, speech, silence, softness) |
| subdue(verb, calm, dull, quiet, moderate) |
| subterranean(adjective, hidden, underground) |
| sulk(calm, quiet, speech, silence, softness) |
| sullenness(calm, quiet, speech, silence, softness) |