| easygoing(adjective, feature, state, calm, quiet) |
| easy(adjective, feature, state, calm, dull) |
| confident(informal, adjective, confidence, sureness) |
| relaxed(adjective, feature, state, calm, quiet) |
| casual(adjective, feature, state, calm, cool) |
| cool(adjective, feature, state, calm, quiet) |
| happy-go-lucky(adjective, feature, state, attitude, trait) |
| calm(adjective, feature, state, quiet, cool) |
| insouciant(adjective, feature, state, calm, cool) |
| peaceful(adjective, feature, state, calm, quiet) |
| permissive(adjective, feature, state, attitude, mild) |
| worry-free(adjective, feature, state, trait) |
| indifferent(adjective, feature, state, calm, dull) |
| mellow(adjective, calm, quiet, cool, gentle) |
| apathetic(adjective, calm, dull, quiet, cool) |
| informal(adjective, cool, plain, mild, relaxed) |
| lax(adjective, feature, state, easy, relaxed) |
| natural(adjective, open, plain, informal, modest) |
| serene(adjective, feature, state, calm, quiet) |
| unflappable(adjective, calm, quiet, cool, moderate) |