- Definitions|2
- Thesaurus|363
- Abbreviations|0
| fell(adjective, harmful, injurious, damaging, deadly) | |
| fetid(adjective, bad, offensive, foul, disgusting) | |
| generate | |
| importunate | |
| importune | |
| internecine(adjective, violent, cruel, harmful, injurious) | |
| lethally | |
| lethiferous(adjective, harmful, injurious, damaging, deadly) | |
| malicious(injurious, damaging, destructive, noxious, toxic) | |
| miasmatic | |
| miasmic | |
| murderous(injurious, damaging, destructive, fatal, poisonous) | |
| narcotic | |
| nauseating(adjective, bad, offensive, foul, disgusting) | |
| nocuous(injurious, damaging, destructive, noxious, toxic) | |
| pandemic | |
| plaguelike | |
| plaguing | |
| plaguy | |
| poison(adjective, virulent) |
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| APA | Smart Define. (2015). pestilential thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/pestilential/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "pestilential thesaurus" https://smartdefine.org/pestilential/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, pestilential thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/pestilential/thesaurus/synonyms>. |
| MLA | Smart Define. "pestilential thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/pestilential/thesaurus/synonyms> |