| unruffled(adjective, calm, quiet, cool, reasonable) |
| weighty(adjective, dull, set, severe, honest) |
| collected(adjective, calm, quiet, set, cool) |
| dispassionate(adjective, calm, cool, relaxed, indifferent) |
| formal(adjective, good, set, restrained, sober) |
| grim(adjective, dull, quiet, dark, heavy) |
| heavy(adjective, dull, quiet, big, substantial) |
| no-nonsense(adjective, calm, dull, quiet, set) |
| prim(adjective, good, stiff, affected, stale) |
| unsmiling |
| dull(adjective, quiet, severe, warm, dark) |
| priggish |
| reserved(adjective, calm, firm, sensible, solid) |
| restrained(adjective, calm, good, quiet, correct) |
| self-possessed(adjective, calm, firm, sensible, solid) |
| stiff |
| unexcitable(adjective, excitability, unexcitable) |
| unflappable(adjective, calm, cool, relaxed, tranquil) |
| stolid(adjective, indifferent, casual, aloof, sober) |
| temperate(adjective, calm, relaxed, tranquil, easygoing) |