24 entries under dangerous topic. ×

14
baneful(adjective, help, unhealthy, injurious)
14
deadly(adjective, help, unhealthy, harmful)
10
noxious(adjective, help, unhealthy, injurious)
10
pernicious(adjective, help, bad, unhealthy)
10
fatal(adjective, deadly, lethal)
10
pestiferous(adjective, harmful, fatal, poisonous)
10
pestilential(adjective, help, unhealthy, deadly)
7
lethal(adjective, harmful, deadly, fatal)
7
harmful(adjective, unhealthy, fatal, unwholesome)
7
mortal(adjective, deadly, lethal)
4
infectious(adjective, catching, spreading, transferable)
4
deleterious(adjective, harmful, fatal, poisonous)
4
injurious(adjective, unhealthy, harmful, fatal)
3
destructive(adjective, unhealthy, harmful, fatal)
3
detrimental(adjective, harmful, poisonous, toxic)
3
diseased(adjective, unhealthy, diseased)
3
troublesome
2
contagious(adjective, unhealthy)
2
corrupting(adjective, harmful, catching, poisonous)
1
contaminating
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APASmart Define. (2015). pestilent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/pestilent/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestilent thesaurus" https://smartdefine.org/pestilent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, pestilent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/pestilent/thesaurus/synonyms>.
MLASmart Define. "pestilent thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/pestilent/thesaurus/synonyms>