| retributive(adjective, vindictive, retaliatory) |
| unfeeling(adjective, tough, severe, evil, nasty) |
| unsympathetic(adjective, tough, harsh, cruel, behavior) |
| bad-tempered |
| inhumane(adjective, severe, evil, nasty, harsh) |
| mean(adjective, evil, nasty, negative, behavior) |
| inimical(adjective, nasty, cold, hostile, aloof) |
| menacing(adjective, behavior, aroused negative, aroused awful feeling) |
| pitiless(adjective, severe, nasty, harsh, cruel) |
| relentless(adjective, mean, severe, evil, nasty) |
| resentful(adjective, mean, tough, nasty, harsh) |
| ruthless(adjective, mean, severe, evil, nasty) |
| villainous(adjective, behavior, aroused negative, aroused awful feeling) |
| wanton(adjective, behavior, aroused negative, aroused awful feeling) |
| bitter(adjective, mean, tough, evil, nasty) |
| hard(adjective, severe, evil, nasty, harsh) |
| ill-tempered |
| nasty(adjective, mean, evil, cold, negative) |
| malign(adjective, mean, nasty, vicious, wicked) |
| rigorous(adjective, tough, harsh, grim, painful) |