36 entries under poisonous topic. ×

5
corrupting(adjective, distressing, injurious, damaging, destructive)
4
foul(adjective, mean, bad, wrong, evil)
4
pestilent(adjective, unhealthy, dangerous, fatal, unwholesome)
4
pestilential(adjective, injurious, damaging, deadly, destructive)
3
cruel(unkind, upsetting, fatal, lethal)
3
internecine(adjective, violent, cruel, injurious, damaging)
3
mortal(adjective, bad, evil, dangerous, injurious)
2
mephitic(adjective, bad, evil, offensive, corrupt)
2
murderous(adjective, bad, offensive, violent, foul)
1
insalutary(adjective, offensive, foul, disgusting)
1
poison(adjective, bad, offensive, corrupt, foul)
1
stinking(adjective, bad, offensive, corrupt, foul)
0
fetid(offensive, foul, disgusting, toxic)
0
putrid(offensive, foul, disgusting, toxic)
0
sickly(offensive, foul, disgusting, toxic)
0
spoiled
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APASmart Define. (2016). harmful thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/harmful/thesaurus/synonyms
ChicagoSmart Define. 2016. "harmful thesaurus" https://smartdefine.org/harmful/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, harmful thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/harmful/thesaurus/synonyms>.
MLASmart Define. "harmful thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/harmful/thesaurus/synonyms>