| adamant(adjective, mean, harsh, cruel, vicious) |
| cold-blooded(adjective, mean, harsh, cruel, vicious) |
| cutthroat(adjective, mean, severe, harsh, cruel) |
| dog-eat-dog(adjective, mean, severe, harsh, cruel) |
| feral(adjective, mean, severe, harsh, cruel) |
| hard-hearted(adjective, mean, severe, harsh, cruel) |
| ironfisted(adjective, mean, severe, harsh, cruel) |
| killer(adjective, mean, severe, harsh, cruel) |
| malevolent(adjective, mean, harsh, cruel, vicious) |
| remorseless(adjective, mean, severe, harsh, cruel) |
| revengeful(adjective, mean, harsh, cruel, vicious) |
| ruthless(adjective, mean, cruel, brutal, pitiless) |
| sadistic(adjective, mean, harsh, cruel, vicious) |
| severe(adjective, mean, harsh, cruel, vicious) |
| stern(adjective, mean, severe, harsh, cruel) |
| stony(adjective, mean, severe, harsh, cruel) |
| surly(adjective, mean, severe, harsh, cruel) |
| unmerciful(adjective, mean, harsh, cruel, vicious) |
| barbarous(adjective, mean, harsh, cruel, vicious) |
| brutal(adjective, mean, harsh, cruel, vicious) |