34 entries under poisonous topic. ×

7
mortal(adjective, harm, harmful, injurious, damaging)
6
insalubrious(evil, offensive, foul, disgusting, harmful)
6
pestiferous(adjective, bad, evil, harmful, injurious)
3
internecine(adjective, violent, cruel, harmful, injurious)
3
murderous(adjective, evil, harmful, injurious, damaging)
3
toxicant(adjective, harmful, poison, snake)
2
corrupting(adjective, unhealthy, distressing, adverse, harmful)
2
mephitical(adjective, bad, evil, malevolent)
1
contaminated(adjective, noxious)
0
fetid(offensive, foul, disgusting, harmful)
0
insalutary(offensive, foul, disgusting, harmful)
0
putrid(offensive, foul, disgusting, harmful)
0
sickly(offensive, foul, disgusting, harmful)
0
spoiled(harmful, toxic)
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APASmart Define. (2015). baneful thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/baneful/thesaurus/synonyms
ChicagoSmart Define. 2015. "baneful thesaurus" https://smartdefine.org/baneful/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, baneful thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/baneful/thesaurus/synonyms>.
MLASmart Define. "baneful thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/baneful/thesaurus/synonyms>