| fatal(adjective, bad, evil, painful, suffering) |
| lethal(adjective, bad, evil, live, harmful) |
| mortal(adjective, dull, awful, terrible, horrible) |
| pernicious(adjective, help, bad, evil, cruel) |
| toxic(adjective, bad, evil, unhealthy, harmful) |
| malignant(adjective, help, unhealthy, dangerous, diseased) |
| noxious(adjective, help, bad, evil, cruel) |
| virulent(adjective, help, strange, horrible, horror) |
| baneful(adjective, help, bad, evil, distressing) |
| destructive(adjective, bad, evil, destruction, dangerous) |
| suicidal(adjective, destruction, harmful, killing, injurious) |
| poisonous(adjective, bad, offensive, foul, disgusting) |
| deathly(adjective, live, dangerous, fatal, gaunt) |
| venomous(adjective, bad, evil, hateful, harmful) |
| harmful(adjective, bad, evil, cruel, unkind) |
| pestilent(adjective, help, unhealthy, harmful, dangerous) |
| deleterious(adjective, bad, evil, cruel, unkind) |
| baleful(adjective, bad, evil, harmful, injurious) |
| ghastly(adjective, awful, terrible, horrible, live) |
| noisome(adjective, bad, evil, offensive, immoral) |