| tranquil(adjective, calm, quiet, cool, smooth) |
| dormant(adjective, action, calm, dull, show) |
| inert(adjective, calm, dull, quiet, moving) |
| motionless(adjective, calm, dull, quiet, cool) |
| serene(adjective, calm, quiet, cool, smooth) |
| calm(adjective, quiet, cool, gentle, still) |
| placid(adjective, calm, quiet, cool, smooth) |
| latent(verb, adjective, action, calm, dull) |
| dead in the water |
| immobile(adjective, calm, dull, secure, gentle) |
| passive(adjective, calm, dull, quiet, gentle) |
| idle(adjective, calm, dull, quiet, gentle) |
| pacific(adjective, quiet, cool, smooth, mild) |
| reposeful(adjective, quiet, cool, smooth, slow) |
| restful(adjective, quiet, cool, smooth, mild) |
| abeyant(adjective, action, dull, show, idle) |
| resting(adjective, calm, smooth, peaceful, comfortable) |
| at rest(expression, adjective, idiom, still, inactive) |
| impassive(adjective, quiet, cool, secure, still) |
| silent(adjective, close, quiet, soft, low) |