| abstinent(adjective, calm, reasonable, moderate, gentle) |
| collected(adjective, calm, dull, quiet, cool) |
| serene(adjective, calm, dull, quiet, cool) |
| somber(adjective, calm, dull, quiet, cool) |
| well-versed(adjective, smart, experience, know, capable) |
| controlled(adjective, quiet, reasonable, moderate, gentle) |
| sensible(adjective, good, hard, sound, reasonable) |
| sombre(adjective, colour) |
| tranquil(adjective, calm, quiet, cool, soft) |
| peaceful(adjective, calm, easy, relaxed, comfortable) |
| prudent(adjective, sound, reasonable, sensible, healthy) |
| subdued(adjective, characteristic, calm, dull, quiet) |
| unruffled(adjective, calm, dull, quiet, cool) |
| dry(adjective, calm, cool, tough, restrained) |
| dull(adjective, quiet, tough, colour, severe) |
| grim(adjective, dull, quiet, severe, dark) |
| imperturbable(adjective, calm, dull, cool, firm) |
| judicious(adjective, good, sound, reasonable, sensible) |
| thoughtful(adjective, good, dull, quiet, sound) |
| austere(adjective, severe, temperate, abstinent, refraining) |