| rigid(adjective, set, mean, strong, hard) |
| calloused(verb, adjective, close, set, fix) |
| coldhearted(adjective, hard, cold, indifferent, detached) |
| detached(adjective, indifferent, unfriendly, distant, apathetic) |
| flinty(adjective, evil, nasty, harsh, vicious) |
| impenitent(adjective, hard, tough, harsh, cruel) |
| mean(verb, adjective, hard, cool, tough) |
| savage(adjective, mean, hard, rough, harsh) |
| steely(adjective, cold, cruel, unfeeling, unsympathetic) |
| unkindly(adjective, bad, cold, aloof, no feelings) |
| unsusceptible(noun, adjective, hard, indifferent, cruel) |
| adamant(adjective, person, mean, hard, rough) |
| anesthetized(adjective, hard, tough, severe, cruel) |
| bloodthirsty(adjective, evil, nasty, harsh, cruel) |
| brute(noun, adjective, bad, cold, aloof) |
| chilly(adjective, person, feelings, emotions, rocky) |
| inconsiderate(adjective, negative emotions) |
| inhumane(adjective, mean, hard, severe, evil) |
| materialistic(feature, person, spirit, sophisticated, experienced) |
| nonchalant(adjective, cool, indifferent, detached, blank) |