86 entries under adjective topic. ×

14
baneful(help, unhealthy, dangerous, injurious)
14
deadly(help, unhealthy, harmful, dangerous)
10
noxious(help, unhealthy, dangerous, injurious)
10
pernicious(help, bad, unhealthy, dangerous)
10
fatal(dangerous, deadly, lethal)
10
pestiferous(harmful, dangerous, fatal, poisonous)
10
pestilential(help, unhealthy, dangerous, deadly)
8
poisonous(unhealthy, harmful, deadly, fatal)
8
malignant(help, unhealthy, lethal)
7
lethal(harmful, dangerous, deadly, fatal)
7
deathly
7
harmful(unhealthy, dangerous, fatal, unwholesome)
7
mortal(dangerous, deadly, lethal)
7
unhealthy(unhealthy, harmful, diseased, unwholesome)
7
virulent(help, unhealthy, deadly, fatal)
4
infectious(dangerous, catching, spreading, transferable)
4
bothersome
4
deleterious(harmful, dangerous, fatal, poisonous)
4
galling
4
hurtful(harmful, poisonous, toxic)
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APASmart Define. (2015). pestilent thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/pestilent/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestilent thesaurus" https://smartdefine.org/pestilent/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, pestilent thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/pestilent/thesaurus/synonyms>.
MLASmart Define. "pestilent thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/pestilent/thesaurus/synonyms>