8 entries under deadly topic. ×

10
noxious(adjective, help, unhealthy, dangerous, injurious)
10
pernicious(adjective, help, bad, unhealthy, dangerous)
10
fatal(adjective, dangerous, lethal)
10
pestilential(adjective, help, unhealthy, dangerous)
8
poisonous(adjective, unhealthy, harmful, fatal)
7
lethal(adjective, harmful, dangerous, fatal)
7
mortal(adjective, dangerous, lethal)
7
virulent(adjective, help, unhealthy, fatal)
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APASmart Define. (2015). pestilent thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/pestilent/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestilent thesaurus" https://smartdefine.org/pestilent/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, pestilent thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/pestilent/thesaurus/synonyms>.
MLASmart Define. "pestilent thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/pestilent/thesaurus/synonyms>