| evil(adjective, harmful, injurious, damaging, deadly) |
| extirpative(adjective, harmful, injurious, damaging, deadly) |
| fatal(adjective, grave, harmful, injurious, damaging) |
| feller(adjective, grave, injurious, deadly, destructive) |
| harmful(adjective, injurious, damaging, deadly, fatal) |
| harrowing(adjective, murderous) |
| hurtful(adjective, harmful, injurious, damaging, deadly) |
| injurious(adjective, harmful, damaging, deadly, fatal) |
| internecine(adjective, harmful, injurious, damaging, deadly) |
| killing(adjective, informal, murderous) |
| lethiferous(adjective, harmful, injurious, damaging, deadly) |
| mortal(adjective, grave, harmful, injurious, damaging) |
| noisome(adjective, harmful, injurious, damaging, deadly) |
| noxious(adjective, harmful, injurious, damaging, deadly) |
| pernicious(adjective, grave, harmful, injurious, damaging) |
| pestiferous(adjective, harmful, injurious, damaging, deadly) |
| pestilential(adjective, harmful, injurious, damaging, deadly) |
| red-handed |
| ruinous(adjective, grim, harmful, injurious, damaging) |
| self-destructive |