48 entries under fatal topic. ×
| calamitous(adjective, severe, awful, terrible, wicked) | |
| noisome(adjective, bad, evil, offensive, foul) | |
| venomous(adjective, bad, evil, dangerous, injurious) | |
| pestiferous(adjective, bad, injurious, damaging, deadly) | |
| suicidal(adjective, violent, cruel, injurious, damaging) | |
| cataclysmic(adjective, dreadful, unfortunate, injurious, damaging) | |
| dire(adjective, severe, awful, terrible, dreadful) | |
| devastating(adjective, bad, evil, dreadful, injurious) | |
| consumptive(adjective, injurious, damaging, deadly, destructive) | |
| pestilent(adjective, unhealthy, dangerous, unwholesome) | |
| pestilential(adjective, injurious, damaging, deadly, destructive) | |
| cruel(unkind, upsetting, poisonous, lethal) | |
| internecine(adjective, violent, cruel, injurious, damaging) | |
| mortal(adjective, bad, evil, dangerous, injurious) | |
| annihilative(adjective, injurious, damaging, deadly) | |
| cancerous(adjective, injurious, damaging, deadly) | |
| extirpative(adjective, injurious, damaging, deadly) | |
| fell(adjective, injurious, damaging, deadly) | |
| mephitic(adjective, bad, evil, offensive, corrupt) | |
| murderous(adjective, bad, offensive, violent, foul) |
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| APA | Smart Define. (2016). harmful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/harmful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, harmful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/harmful/thesaurus/synonyms>. |
| MLA | Smart Define. "harmful thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/harmful/thesaurus/synonyms> |