| thick-skinned(adjective, calm, cool, steady, tranquil) |
| together(adjective, calm, relaxed, tranquil, easygoing) |
| tranquil(adjective, calm, cool, relaxed, steady) |
| trifling(adjective, calm, cool, relaxed, detached) |
| unaffected(adjective, calm, cool, steady, tranquil) |
| undisturbed(adjective, calm, cool, steady, tranquil) |
| unexcitable(adjective, calm, cool, steady, composed) |
| unexcited(adjective, calm, cool, relaxed, detached) |
| unimpressible(adjective, calm, cool, relaxed, detached) |
| unmoved(adjective, calm, cool, steady, unaffected) |
| unperturbed(adjective, calm, cool, relaxed, detached) |
| unruffled(adjective, calm, cool, relaxed, steady) |
| untouched(adjective, calm, cool, steady, tranquil) |
| untroubled(adjective, calm, cool, relaxed, detached) |
| abstemious |
| aloof(adjective, calm, cool, relaxed, detached) |
| anesthetized(adjective, relieved) |
| apathetic(adjective, calm, cool, relaxed, detached) |
| buttoned up(expression, silenced, whist) |
| casual(adjective, calm, cool, relaxed, detached) |