| lethal(adjective, grim, harmful, injurious, damaging) |
| annihilative(adjective, harmful, injurious, damaging, deadly) |
| arduous(adjective, murderous) |
| baleful(adjective, harmful, injurious, damaging, deadly) |
| bloodstained |
| botchy |
| brutish(adjective, aper, demoniac, annihilative) |
| calamitous(adjective, harmful, injurious, damaging, deadly) |
| cancerous(adjective, harmful, injurious, damaging, deadly) |
| cataclysmic(adjective, harmful, injurious, damaging, deadly) |
| catastrophic(adjective, harmful, injurious, damaging, deadly) |
| consumptive(adjective, harmful, injurious, damaging, deadly) |
| criminal(adjective, murderous) |
| damaging(adjective, harmful, injurious, deadly, fatal) |
| dangerous(adjective, murderous) |
| deleterious(adjective, harmful, injurious, damaging, deadly) |
| detrimental(adjective, harmful, injurious, damaging, deadly) |
| dire(adjective, harmful, injurious, damaging, deadly) |
| disastrous(adjective, harmful, injurious, damaging, deadly) |
| eradicative(adjective, harmful, injurious, damaging, deadly) |