| bad(adjective, evil, cruel, corrupt, negative) |
| adverse(adjective, negative, critical, contrary, unfortunate) |
| cataclysmic(adjective, help, grave, unfortunate, injurious) |
| dangerous(adjective, bad, harmful, deadly, fatal) |
| poisonous(adjective, bad, cruel, unkind, harmful) |
| toxic(verb, adjective, unhealthy, harmful, dangerous) |
| violent(adjective, rough, harsh, cruel, vicious) |
| malignant(adjective, bad, harmful, dangerous, deadly) |
| negative(adjective, critical, harmful, injurious, unfavorable) |
| venomous(verb, adjective, bad, hateful, rotten) |
| dire(verb, adjective, grave, unfortunate, injurious) |
| mischievous(adjective, cruel, negative, wicked, unkind) |
| mortal(verb, adjective, dangerous, injurious, deadly) |
| fell(verb, adjective, harsh, violent, heavy) |
| murderous(verb, adjective, difficult, harsh, violent) |
| noisome(adjective, bad, harmful, injurious, noxious) |
| savage(adjective, nasty, unpleasant, violent, cruel) |
| unwholesome(adjective, unhealthy, rotten, harmful, injurious) |
| brutal(adjective, harsh, violent, cruel, vicious) |
| malign(adjective, injurious, hurtful) |