| inconsiderate(adjective, mean, nasty, ill, hostile) |
| indurate(adjective, mean, bad, hard, cold) |
| insensate(adjective, bad, hard, tough, severe) |
| rigid(adjective, mean, hard, harsh, inflexible) |
| stern(adjective, mean, severe, harsh, cruel) |
| stoic(adjective, impassive, laid-back, dispassionate, emotionless) |
| stonyhearted(adjective, person, feelings, emotions) |
| tyrannical(adjective, hard, tough, evil, nasty) |
| unbending(adjective, mean, hard, harsh, inflexible) |
| unforgiving(adjective, mean, hard, tough, harsh) |
| unfriendly(adjective, person, mean, hard, indifferent) |
| unkindly(adjective, bad, cold, aloof, no feelings) |
| unnatural(adjective, evil, nasty, harsh, vicious) |
| unpitying(adjective, negative) |
| unrelenting(adjective, mean, hard, tough, evil) |
| vicious(adjective, mean, evil, nasty, harsh) |
| barbaric |
| beastly |
| chill(adjective, bad, cold, detached, aloof) |
| coldhearted(adjective, person, mean, hard, feelings) |