| remorseless(adjective, mean, kind, severe, harsh) |
| unpitying(noun, adjective, mean, severe, harsh) |
| stony(adjective, person, mean, hard, tough) |
| vicious(adjective, mean, hard, evil, rough) |
| barbaric(adjective, rough, violent, cruel, vicious) |
| cold-blooded(adjective, person, mean, hard, tough) |
| ferocious(adjective, mean, hard, evil, rough) |
| fierce(adjective, mean, hard, tough, evil) |
| severe(adjective, appearance, mean, hard, tough) |
| implacable(adjective, appearance, mean, hard, tough) |
| relentless(adjective, appearance, mean, hard, tough) |
| brutish(adjective, hard, evil, nasty, harsh) |
| cutthroat(adjective, mean, harsh, cruel, vicious) |
| inexorable(adjective, appearance, mean, hard, tough) |
| mean(adjective, person, evil, nasty, difficult) |
| unyielding(adjective, appearance, mean, hard, tough) |
| bloodthirsty(adjective, severe, evil, nasty, harsh) |
| grim(adjective, appearance, mean, hard, tough) |
| insensitive(adjective, hard, tough, severe, harsh) |
| vindictive(adjective, person, mean, hard, tough) |