1
calamitous(adjective, harmful, injurious, damaging, deadly)
1
cancerous(adjective, harmful, injurious, damaging, deadly)
1
cataclysmic(adjective, harmful, injurious, damaging, deadly)
1
catastrophic(adjective, harmful, injurious, damaging, deadly)
1
communicable
1
consumptive(adjective, harmful, injurious, damaging, deadly)
1
corrupting(harmful, injurious, damaging, destructive, catching)
1
corruptive
1
cutthroat(adjective, harmful, injurious, damaging, deadly)
1
damaging(adjective, tough, evil, harmful, injurious)
1
deathly
1
devastating(adjective, evil, wicked, harmful, injurious)
1
dire(adjective, harmful, injurious, damaging, deadly)
1
disastrous(adjective, harmful, injurious, damaging, deadly)
1
disgusting
1
endemic
1
envenomed
1
epidemical
1
eradicative(adjective, harmful, injurious, damaging, deadly)
1
extirpative(adjective, harmful, injurious, damaging, deadly)
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APASmart Define. (2015). pestilential thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/pestilential/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestilential thesaurus" https://smartdefine.org/pestilential/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, pestilential thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/pestilential/thesaurus/synonyms>.
MLASmart Define. "pestilential thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/pestilential/thesaurus/synonyms>