| calm(adjective, calm, quiet, cool, smooth) |
| serene(adjective, calm, quiet, smooth, easy) |
| tranquil(adjective, calm, quiet, smooth, mild) |
| composed(adjective, calm, quiet, cool, smooth) |
| cool(adjective, calm, sound, easy, sensible) |
| placid(adjective, calm, smooth, easy, mild) |
| equable(adjective, calm, quiet, sound, reasonable) |
| imperturbable(adjective, calm, quiet, cool, smooth) |
| unruffled(adjective, calm, quiet, cool, smooth) |
| collected(adjective, calm, quiet, cool, reasonable) |
| easygoing(adjective, calm, quiet, kind, pleasant) |
| unflappable(adjective, calm, cool, sound, smooth) |
| peaceful(adjective, calm, easy, mild, relaxed) |
| sedate(adjective, calm, easy, mild, relaxed) |
| level-headed(adjective, calm, sound, smooth, sensible) |
| moderate(adjective, calm, quiet, kind, pleasant) |
| self-possessed(adjective, calm, reasonable, sensible, mild) |
| steady(adjective, calm, sound, smooth, reasonable) |
| temperate(adjective, calm, smooth, reasonable, moderate) |
| controlled(adjective, reasonable, restrained, self-controlled, unexcitable) |