45 entries under poisonous topic. ×

41
harmful(adjective, bad, severe, evil, awful)
30
injurious(adjective, severe, awful, terrible, cruel)
26
deleterious(adjective, bad, harmful, injurious, damaging)
25
deadly(adjective, bad, destruction, harmful, dangerous)
23
pernicious(adjective, help, bad, evil, cruel)
22
baleful(verb, adjective, bad, harmful, injurious)
21
hurtful(adjective, bad, evil, cruel, negative)
20
noxious(adjective, bad, evil, cruel, negative)
19
baneful(adjective, evil, harmful, injurious, mortal)
13
dangerous(adjective, bad, harmful, deadly, fatal)
13
toxic(verb, adjective, unhealthy, harmful, dangerous)
13
violent(adjective, rough, harsh, cruel, vicious)
12
malignant(adjective, bad, harmful, dangerous, deadly)
11
venomous(verb, adjective, bad, hateful, rotten)
9
murderous(verb, adjective, difficult, harsh, violent)
9
savage(adjective, nasty, unpleasant, violent, cruel)
9
unwholesome(adjective, unhealthy, rotten, harmful, injurious)
8
unhealthy(adjective, distressing, harmful, injurious, damaging)
8
virulent(adjective, unhealthy, rotten, inexpedience, noxious)
6
internecine(verb, adjective, harmful, injurious, damaging)
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APASmart Define. (2016). destructive thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/destructive/thesaurus/synonyms
ChicagoSmart Define. 2016. "destructive thesaurus" https://smartdefine.org/destructive/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, destructive thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/destructive/thesaurus/synonyms>.
MLASmart Define. "destructive thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/destructive/thesaurus/synonyms>