| inflictive |
| merciless(adjective, severe, harsh, cruel, reactive) |
| penalizing |
| rancorous(adjective, reactive, reciprocal, vindictive, unforgiving) |
| spiteful(adjective, reactive, reciprocal, vindictive, unforgiving) |
| stringent(adjective, hard, severe, sharp, nasty) |
| cruel(adjective, hard, severe, sharp, nasty) |
| abusive(adjective, hard, severe, sharp, nasty) |
| avenging(adjective, reactive, reciprocal, vindictive, unforgiving) |
| brutal(adjective, hard, severe, sharp, nasty) |
| grim(adjective, hard, severe, sharp, nasty) |
| hard(adjective, severe, sharp, nasty, harsh) |
| implacable(adjective, severe, harsh, cruel, reactive) |
| in reprisal(expression, adjective, idiom, punishment, disciplinary) |
| pitiless(adjective, hard, severe, sharp, nasty) |
| reciprocal(adjective, reactive, tit-for-tat, retaliatory) |
| rigid(adjective, severe, bleak, stark, austere) |
| ruthless(adjective, hard, severe, sharp, nasty) |
| stern(adjective, hard, severe, sharp, nasty) |
| stiff |