7
warp(verb, influence, kill, sway, bias)
6
disease(noun, growth, pollution, taint, pollute)
6
kill(noun, verb, action, destroy, process)
6
curse(noun, trouble, ruin, burden, growth)
6
destroy(verb, kill, overthrow, slaughter, execute)
6
harm(verb, hurt, information, damage, influence)
6
jaundice(verb, information, influence, harm, hinder)
6
plague(noun, trouble, ruin, burden, growth)
6
virulence(noun, action, thing, bane, toxin)
5
demoralize(verb, action, act, ruin, corrupt)
5
impair(verb, information, influence, harm, hinder)
5
alloy(noun, action, thing, foul, deterioration)
5
contaminant(noun, person, clean, contaminator)
5
pestilence(noun, action, thing, phenomena)
5
poisonousness(noun, action, thing, phenomena)
5
put poison in(expression, action, process, dealing)
5
sour(verb, upset, alienate, disillusion)
5
toxic substance(noun, expression, idiom, kill, toxin)
4
evil(noun, adjective, bad, nasty, corrupt)
4
bitterness(noun, hatred, hate, hostility, spite)
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APASmart Define. (2016). poison thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/poison/thesaurus/synonyms
ChicagoSmart Define. 2016. "poison thesaurus" https://smartdefine.org/poison/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, poison thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/poison/thesaurus/synonyms>.
MLASmart Define. "poison thesaurus" 19 February 2016. Web. 25 September 2026. <https://smartdefine.org/poison/thesaurus/synonyms>