| disimpassioned(adjective, calm, cool, relaxed, steady) |
| disinterested(adjective, quiet, cool, moderate, gentle) |
| dispassionate(adjective, calm, quiet, cool, moderate) |
| easy(adjective, calm, relaxed, tranquil, easygoing) |
| easygoing(adjective, calm, relaxed, tranquil, serene) |
| equable(adjective, quiet, cool, moderate, gentle) |
| equanimous(adjective, calm, cool, steady, unaffected) |
| even-tempered(adjective, calm, reasonable, sensible, restrained) |
| hard as nails(expression, adjective, idiom, calm, cool) |
| immovable(adjective, calm, cool, steady, unaffected) |
| impassive(adjective, calm, quiet, cool, moderate) |
| imperturbable(adjective, calm, quiet, cool, moderate) |
| inscrutable(adjective, quiet, cool, moderate, gentle) |
| keeping a stiff upper lip(expression, adjective, idiom, calm, relaxed) |
| laid-back(adjective, calm, quiet, cool, moderate) |
| levelheaded(adjective, calm, quiet, cool, reasonable) |
| listless(adjective, quiet, cool, moderate, gentle) |
| moderate(adjective, quiet, cool, gentle, relaxed) |
| nerveless(adjective, calm, cool, steady, unaffected) |
| neutral(adjective, quiet, cool, moderate, gentle) |