| unflappable(adjective, calm, quiet, cool, relaxed) |
| demure(adjective, reserved, unexcitable) |
| even-tempered(adjective, reasonable, moderate, mild, agreeable) |
| frigid(adjective, reserved, unexcitable) |
| phlegmatic(adjective, calm, quiet, cool, relaxed) |
| sedate(adjective, reserved) |
| sober(adjective, calm, cool, reasonable, moderate) |
| stoical(adjective, calm, cool, tolerant, enduring) |
| detached(adjective, calm, quiet, cool, relaxed) |
| impassive(adjective, calm, quiet, cool, relaxed) |
| moderate(adjective, calm, quiet, reasonable, mild) |
| modest(adjective, close, quiet, reasonable, moderate) |
| self-contained(adjective, reserved) |
| steady(adjective, calm, quiet, reasonable, moderate) |
| undisturbed |
| unexcitable(adjective, unexcitable) |
| unexcited(adjective, calm, quiet, relaxed, casual) |
| unperturbed |
| apathetic(adjective, calm, cool, indifferent, tolerant) |
| cautious(adjective, reserved) |