| unhuman |
| unkind(adjective, nasty, wicked, malicious, spiteful) |
| unpitying |
| unregenerate(adjective, hard, tough, harsh, cruel) |
| unrelenting(adjective, hard, tough, harsh, violent) |
| unremitting(adjective, hard, tough, harsh, cruel) |
| unrepenting(adjective, hard, tough, harsh, cruel) |
| unrestrained(adjective, violent, cruel, vicious, fierce) |
| unyielding(adjective, hard, tough, harsh, cruel) |
| vehement(adjective, strong, severe, intense, violent) |
| venomous(strong, violent, brutal, ferocious, menacing) |
| vindictive(adjective, hard, tough, nasty, harsh) |
| voracious(adjective, violent, cruel, vicious, fierce) |
| Draconic |
| adverse(injurious, damaging, destructive) |
| aggressive(adjective, severe, violent, wild, cruel) |
| agitated(adjective, cruel, vicious, brutal, aggressive) |
| amok |
| amuck |
| annihilative(harmful, damaging, aper, demoniac, disastrous) |