| snug(adjective, smooth, soft, easy, thin) |
| soft as silk(expression, idiom) |
| soothing(adjective, quiet, soft, gentle, flat) |
| spongy(adjective, smooth, soft, easy, thin) |
| squashy(adjective, smooth, soft, easy, thin) |
| squishy(adjective, smooth, soft, easy, thin) |
| stable(adjective, quiet, soft, gentle, flat) |
| steady(adjective, quiet, soft, gentle, flat) |
| still(adjective, quiet, soft, gentle, flat) |
| tender |
| thin(adjective, smooth, soft, easy, yielding) |
| thin-spun |
| tranquil(adjective, quiet, soft, gentle, flat) |
| unbroken(adjective, quiet, soft, gentle, flat) |
| undeviating(adjective, quiet, soft, gentle, flat) |
| undisturbed(adjective, quiet, soft, gentle, flat) |
| uneventful(adjective, quiet, soft, gentle, flat) |
| uninterrupted(adjective, quiet, soft, gentle, flat) |
| unruffled(adjective, quiet, smooth, soft, gentle) |
| untroubled(adjective, quiet, soft, gentle, flat) |