121 entries under bad topic. ×

25
venomous(adjective, help, mean, nasty)
25
malignant(adjective, mean, evil, nasty)
21
noxious(adjective, mean, nasty, offensive)
21
virulent(adjective, help, mean, nasty)
20
deadly(adjective, offensive, foul, disgusting)
19
lethal(adjective, harmful, dangerous, deadly)
17
pernicious(adjective, mean, evil, nasty)
16
harmful(adjective, evil, offensive, cruel)
15
dangerous(adjective, offensive, violent, wild)
14
baleful(adjective, mean, evil, nasty)
14
deleterious(adjective, mean, evil, nasty)
14
destructive(adjective, cruel, unkind, harmful)
14
nasty(adjective, mean, taste, attitude)
14
vicious(adjective, mean, evil, nasty)
13
injurious(adjective, mean, evil, nasty)
13
malicious(adjective, mean, evil, nasty)
11
noisome(adjective, taste, offensive, awful)
10
detrimental(adjective, mean, nasty, offensive)
10
hurtful(adjective, offensive, cruel, foul)
10
malevolent(adjective, mean, evil, nasty)
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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>