| bestial(adjective, animal, mean, severe, evil) |
| murderous(adjective, hard, tough, harsh, violent) |
| beastly(adjective, mean, violent, cruel, vicious) |
| cold(adjective, mean, hard, tough, severe) |
| cutthroat(adjective, mean, severe, harsh, cruel) |
| dog-eat-dog(adjective, mean, severe, harsh, cruel) |
| fell(adjective, animal, mean, harsh, violent) |
| feral(adjective, mean, violent, cruel, vicious) |
| hardhearted(adjective, mean, severe, harsh, cold) |
| hellish(adjective, evil, nasty, harsh, violent) |
| obdurate(adjective, mean, hard, tough, severe) |
| stony(adjective, mean, hard, tough, severe) |
| stony-hearted(adjective, cold, cruel, unfeeling, unsympathetic) |
| indifferent(adjective, mean, hard, harsh, cold) |
| mean(verb, adjective, animal, hard, severe) |
| monstrous(adjective, severe, evil, nasty, harsh) |
| unbending(adjective, hard, rough, harsh, cruel) |
| uncompromising(adjective, hard, rough, harsh, cruel) |
| atrocious(adjective, evil, nasty, harsh, rude) |
| bloody(adjective, hard, tough, harsh, violent) |