| insensate(adjective, hard, careless, indifferent, cruel) |
| inured(adjective, hard, careless, indifferent, cruel) |
| laid-back(adjective, detached, impassive, unresponsive, reticent) |
| listless(adjective, detached, impassive, unresponsive, laid-back) |
| marble(adjective, detached, impassive, unresponsive, insensitive) |
| nonemotional |
| nonreactive(adjective, dead, insensitive, insusceptible) |
| not responsive(expression, adjective, detached, impassive, unresponsive) |
| obdurate(adjective, hard, careless, indifferent, cruel) |
| obstinate |
| phlegmatic(adjective, detached, impassive, unresponsive, laid-back) |
| quiet(adjective, detached, impassive, unresponsive, laid-back) |
| reserved(adjective, detached, impassive, unresponsive, laid-back) |
| reticent(adjective, detached, impassive, unresponsive, laid-back) |
| rolling with the punches(expression, adjective, idiom, detached, impassive) |
| stiff(adjective, hard, careless, indifferent, cruel) |
| stoic(adjective, impassive, laid-back, dispassionate, emotionless) |
| stolid |
| thick-skinned(adjective, hard, careless, indifferent, cruel) |
| torpid(adjective, hard, careless, indifferent, cruel) |