| aloof(adjective, calm, restrained, unconcerned, subdued) |
| callous(adjective, calm, restrained, unconcerned, subdued) |
| calm(adjective, restrained, unconcerned, subdued, impassive) |
| casual(adjective, calm, restrained, unconcerned, subdued) |
| cold fish(expression, adjective, calm, restrained, unconcerned) |
| cool(adjective, calm, restrained, unconcerned, subdued) |
| easy-going(adjective, calm, restrained, unconcerned, subdued) |
| hard-boiled(adjective, calm, restrained, unconcerned, subdued) |
| hard-hearted(adjective, calm, restrained, unconcerned, subdued) |
| impassive(adjective, calm, restrained, unconcerned, subdued) |
| impervious(adjective, calm, restrained, unconcerned, subdued) |
| laid-back(adjective, calm, restrained, unconcerned, subdued) |
| proof(adjective, calm, restrained, unconcerned, subdued) |
| steady(adjective, calm, restrained, unconcerned, subdued) |
| thick-skinned(adjective, calm, restrained, unconcerned, subdued) |
| unaltered(adjective, calm, restrained, unconcerned, subdued) |
| unchanged(adjective, calm, restrained, unconcerned, subdued) |
| unconcerned(adjective, calm, restrained, subdued, impassive) |
| unexcited(adjective, calm, restrained, unconcerned, subdued) |
| unimpressed(adjective, calm, restrained, unconcerned, subdued) |