| easeful(calm, quiet, friendly, serene) |
| friendly(adjective, calm, quiet, peaceful, easygoing) |
| good-tempered(adjective, calm, kind, smooth, soft) |
| kindly(adjective, adverb, calm, quiet, cool) |
| lenient(adjective, calm, quiet, weak, kind) |
| muted(adjective, calm, quiet, smooth, soft) |
| peace(noun, adjective) |
| reserved(adjective, close, quiet, cool, gentle) |
| self-contained(adjective, close, quiet, cool, gentle) |
| solemn(adjective, calm, cool, dignified) |
| soothing(adjective, calm, quiet, cool, smooth) |
| staid(adjective, calm, cool, relaxed, tranquil) |
| stilly(adjective, calm) |
| submissive(adjective, calm, kind, smooth, soft) |
| yielding(adjective, passive, appeasing, peacemaking) |
| idle(adjective, passive) |
| irenic(adjective, calm, quiet, friendly, mild) |
| philosophical(adjective, calm, quiet, relaxed, casual) |
| unemotional(adjective, calm, quiet, cool, moderate) |
| acquiescent(adjective, passive) |