14 entries under fatal topic. ×

14
baneful(adjective, help, unhealthy, dangerous, injurious)
14
deadly(adjective, help, unhealthy, harmful, dangerous)
10
noxious(adjective, help, unhealthy, dangerous, injurious)
10
pestiferous(adjective, harmful, dangerous, poisonous)
8
poisonous(adjective, unhealthy, harmful, deadly)
7
lethal(adjective, harmful, dangerous, deadly)
7
harmful(adjective, unhealthy, dangerous, unwholesome)
7
virulent(adjective, help, unhealthy, deadly)
4
deleterious(adjective, harmful, dangerous, poisonous)
4
injurious(adjective, unhealthy, harmful, dangerous)
4
venomous(adjective, unhealthy, harmful, unwholesome)
3
destructive(adjective, unhealthy, harmful, dangerous)
3
toxic(adjective, unhealthy, harmful, unwholesome)
1
dangerous(harmful, poisonous, toxic, lethal)
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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>