| relaxed(adjective, calm, tranquil, easygoing, serene) |
| repressed(adjective, calm, relaxed, tranquil, easygoing) |
| sedate(adjective, calm, relaxed, tranquil, easygoing) |
| self-assured(adjective, calm, relaxed, tranquil, easygoing) |
| self-possessed(adjective, calm, relaxed, tranquil, easygoing) |
| sensible(adjective, calm, relaxed, tranquil, easygoing) |
| serene(adjective, calm, relaxed, tranquil, easygoing) |
| serious(adjective, calm, relaxed, tranquil, easygoing) |
| soothed(adjective, calm, relaxed, tranquil, easygoing) |
| staid(adjective, calm, relaxed, tranquil, easygoing) |
| suppressed(adjective, calm, relaxed, tranquil, easygoing) |
| sure of oneself(expression, adjective, idiom, calm, relaxed) |
| temperate(adjective, calm, relaxed, tranquil, easygoing) |
| together(adjective, calm, relaxed, tranquil, easygoing) |
| tranquil(adjective, calm, relaxed, easygoing, serene) |
| unflappable(adjective, calm, relaxed, tranquil, easygoing) |
| unruffled(adjective, calm, relaxed, tranquil, easygoing) |
| untroubled(adjective, calm, relaxed, tranquil, easygoing) |
| buttoned up(expression, silenced, whist, disimpassioned) |
| clammed up(expression, silenced, whist, disimpassioned) |