| inscrutable(adjective, dull, quiet, cool, moderate) |
| insentient(adjective, hard, careless, cold, indifferent) |
| obtuse(adjective, dull, hard, slow, stupid) |
| quiescent(adjective, quiet, cool, secure, still) |
| restful(adjective, quiet, cool, moderate, gentle) |
| still(adjective, quiet, cool, moderate, gentle) |
| undisturbed(adjective, quiet, cool, moderate, gentle) |
| wooden(adjective, dull, cool, dead, blank) |
| apathetical(adjective, temper, cold, negative, dead) |
| dense(adjective, dull, slow, stupid, unresponsive) |
| distant(adjective, cool, indifferent, restrained, detached) |
| halfhearted(adjective, temper, cold, negative, enthusiasm) |
| hard-hearted(adjective, calm, indifferent, restrained, detached) |
| inexpressive(adjective, dull, cool, detached, dead) |
| lukewarm(adjective, calm, cool, temper, relaxed) |
| reticent(adjective, cool, restrained, detached, blank) |
| self-controlled(adjective, calm, quiet, cool, relaxed) |
| smooth(adjective, calm, quiet, cool, relaxed) |
| soulless(adjective, hard, careless, indifferent, cruel) |
| undemonstrative(adjective, calm, cool, restrained, detached) |