299 entries under adjective topic. ×

28
toxic(help, heavy, foul, unhealthy)
25
venomous(help, mean, bad, nasty)
25
malignant(mean, bad, evil, nasty)
21
noxious(mean, bad, nasty, offensive)
21
virulent(help, mean, bad, nasty)
20
deadly(bad, offensive, foul, disgusting)
19
lethal(bad, harmful, dangerous, deadly)
17
pernicious(mean, bad, evil, nasty)
16
fatal(harmful, dangerous, deadly, lethal)
16
baneful(offensive, foul, disgusting, unhealthy)
16
harmful(bad, evil, offensive, cruel)
15
dangerous(bad, offensive, violent, wild)
14
baleful(mean, bad, evil, nasty)
14
deleterious(mean, bad, evil, nasty)
14
destructive(bad, cruel, unkind, harmful)
14
nasty(mean, bad, taste, attitude)
14
vicious(mean, bad, evil, nasty)
13
injurious(mean, bad, evil, nasty)
13
malicious(mean, bad, evil, nasty)
12
bad(evil, nasty, offensive, violent)
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APASmart Define. (2015). poisonous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/poisonous/thesaurus/synonyms
ChicagoSmart Define. 2015. "poisonous thesaurus" https://smartdefine.org/poisonous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, poisonous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/poisonous/thesaurus/synonyms>.
MLASmart Define. "poisonous thesaurus" 19 August 2015. Web. 26 September 2026. <https://smartdefine.org/poisonous/thesaurus/synonyms>