| cold(adjective, informal, reserved) |
| cool-headed |
| formal(adjective, reserved) |
| inhibited(adjective, restraint, reserved) |
| nonchalant(adjective, calm, quiet, relaxed, casual) |
| noncommittal(adjective, restraint, reserved) |
| philosophical(adjective, calm, quiet, relaxed, casual) |
| relaxed(adjective, calm, quiet, casual, unruffled) |
| reserved(adjective, calm, quiet, reasonable, gentle) |
| reticent(adjective, calm, quiet, gentle, mild) |
| retiring(adjective, calm, quiet, gentle, mild) |
| staid(adjective, unexcitable) |
| stolid(adjective, calm, quiet, cool, relaxed) |
| temperate(adjective, calm, reasonable, moderate, restrained) |
| together(adjective, calm, quiet, relaxed, casual) |
| unemotional(adjective, calm, quiet, cool, relaxed) |
| unmoved(adjective, calm, cool, tolerant, enduring) |
| withdrawn(adjective, calm, quiet, gentle, mild) |
| assured(adjective, calm, quiet, relaxed, casual) |
| backward(adjective, reserved) |