51 entries under harmful topic. ×

3
insalubrious(offensive, foul, disgusting, poisonous)
2
baleful(adjective, bad, evil, injurious)
2
unhealthful(offensive, foul, disgusting, poisonous)
1
annihilative(adjective, injurious, damaging, deadly)
1
calamitous(adjective, injurious, damaging, deadly)
1
cancerous(adjective, injurious, damaging, deadly)
1
cataclysmic(adjective, injurious, damaging, deadly)
1
catastrophic(adjective, injurious, damaging, deadly)
1
consumptive(adjective, injurious, damaging, deadly)
1
corrupting(injurious, damaging, destructive, catching)
1
cutthroat(adjective, injurious, damaging, deadly)
1
damaging(adjective, tough, evil, injurious)
1
devastating(adjective, evil, wicked, injurious)
1
dire(adjective, injurious, damaging, deadly)
1
disastrous(adjective, injurious, damaging, deadly)
1
eradicative(adjective, injurious, damaging, deadly)
1
extirpative(adjective, injurious, damaging, deadly)
1
fell(adjective, injurious, damaging, deadly)
1
fetid(adjective, bad, offensive, foul, disgusting)
1
internecine(adjective, violent, cruel, injurious)
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APASmart Define. (2015). pestilential thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/pestilential/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestilential thesaurus" https://smartdefine.org/pestilential/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, pestilential thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/pestilential/thesaurus/synonyms>.
MLASmart Define. "pestilential thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/pestilential/thesaurus/synonyms>