| heedless(adjective, feature, state, indifferent, trait) |
| immovable(adjective, calm, cool, steady, tranquil) |
| inactive(adjective, quiet, cool, smooth, mild) |
| intact(adjective, sound, whole, continuous, untouched) |
| isolated(adjective, shy, stable, peaceful, tranquil) |
| lackadaisical(adjective, indifferent, nonchalant, undaunted, unworried) |
| laid back(expression, adjective, feature, state, gentle) |
| leisurely(adjective, calm, quiet, light, smooth) |
| level(adjective, calm, quiet, smooth, soft) |
| levelheaded(adjective, quiet, cool, moderate, gentle) |
| negligent(adjective, feature, state, indifferent, trait) |
| patient(adjective, calm, quiet, cool, moderate) |
| reposeful(adjective, quiet, cool, smooth, mild) |
| reposing(adjective, quiet, cool, smooth, mild) |
| reserved(adjective, indifferent, shy, stable, peaceful) |
| secluded(adjective, shy, stable, peaceful, tranquil) |
| self-contained |
| sequestered(adjective, shy, stable, peaceful, tranquil) |
| serious |
| slow(adjective, calm, quiet, light, cool) |