| restful(adjective, calm, easy, relaxed, comfortable) |
| unemotional(adjective, calm, cool, relaxed, detached) |
| unimpassioned(adjective, excitability) |
| unmotivated |
| unmoved(adjective, indifferent, unsympathetic, tranquil, inattentive) |
| unworried(adjective, calm, indifferent, peaceful, unconcerned) |
| carefree(adjective, calm, relaxed, indifferent, comfortable) |
| indifferent(adjective, calm, cool, relaxed, detached) |
| mild(adjective, calm, quiet, easy, relaxed) |
| self-controlled |
| steady(adjective, calm, sound, sensible, peaceful) |
| uncaring(adjective, attitude, cold, unemotional, calmness) |
| unconcerned(adjective, calm, cool, firm, relaxed) |
| apathetic(adjective, calm, cool, relaxed, indifferent) |
| certain(adjective, confident) |
| easygoing(adjective, calm, quiet, cool, easy) |
| laid-back(adjective, calm, cool, relaxed, casual) |
| passive |
| peaceable |
| philosophical |