| easygoing(adjective, calm, cool, relaxed, detached) |
| effortless(adjective, calm, cool, relaxed, detached) |
| equanimous(adjective, calm, cool, steady, tranquil) |
| hard as nails(expression, adjective, idiom, calm, cool) |
| immovable(adjective, calm, cool, steady, tranquil) |
| impassive(adjective, calm, cool, relaxed, detached) |
| incurious(adjective, calm, cool, relaxed, detached) |
| insouciant(adjective, calm, cool, relaxed, detached) |
| keeping a stiff upper lip(expression, adjective, idiom, calm, relaxed) |
| levelheaded(adjective, calm, relaxed, tranquil, easygoing) |
| light(adjective, calm, cool, relaxed, detached) |
| loose(adjective, calm, cool, relaxed, detached) |
| neglectful(adjective, calm, cool, relaxed, detached) |
| negligent(adjective, calm, cool, relaxed, detached) |
| nerveless(adjective, calm, cool, steady, tranquil) |
| not turn a hair(expression, adjective, idiom, calm, relaxed) |
| placid(adjective, calm, cool, relaxed, casual) |
| poised(adjective, calm, relaxed, tranquil, easygoing) |
| possessed(adjective, calm, relaxed, tranquil, easygoing) |
| quiet(adjective, silenced, whist) |