| dispassionate(adjective, cool, cold, indifferent, cruel) |
| severe(adjective, mean, hard, tough, harsh) |
| stonyhearted(adjective, person, attitude, feelings, emotions) |
| unconcerned(adjective, mean, hard, cool, unpleasant) |
| vicious(adjective, mean, bad, wrong, evil) |
| inhumane(adjective, mean, hard, severe, evil) |
| impassive(adjective, hard, cool, careless, indifferent) |
| mean(verb, adjective, bad, hard, cool) |
| numb(adjective, hard, tough, severe, cruel) |
| passionless(adjective, cool, indifferent, detached, blank) |
| unpitying(adjective, mean, hard, cool, severe) |
| brutish(adjective, hard, evil, nasty, harsh) |
| emotionless(adjective, cool, detached, blank, aloof) |
| flinty(adjective, evil, nasty, harsh, vicious) |
| icy(adjective, mean, hard, cool, tough) |
| relentless(adjective, mean, hard, severe, evil) |
| soulless(adjective, hard, careless, indifferent, cruel) |
| thick-skinned(adjective, mean, feeling, hard, cool) |
| unforgiving(adjective, mean, hard, severe, harsh) |
| unresponsive(adjective, mean, hard, cool, unpleasant) |