70 entries under injurious topic. ×

11
malign(adjective, mean, bad, evil, nasty)
11
pestilential(adjective, help, bad, evil, harmful)
11
sinister(adjective, bad, evil, nasty, negative)
10
mischievous(adjective, mean, bad, nasty, cruel)
10
pestiferous(adjective, bad, evil, harmful)
9
venomous(adjective, mean, bad, evil, nasty)
8
noisome(adjective, bad, evil, offensive, immoral)
8
unwholesome(adjective, offensive, foul, disgusting, unhealthy)
7
mortal(adjective, bad, evil, grave, harmful)
7
adverse(adjective, contrary, dreadful, distressing)
6
devastating(adjective, bad, evil, wicked, dreadful)
6
disastrous(adjective, bad, wicked, immoral, dreadful)
5
calamitous(adjective, bad, wicked, immoral, dreadful)
5
catastrophic(adjective, dreadful, harmful, damaging)
5
ill(adjective, rude, vicious, wicked, hostile)
5
malefic(adjective, negative, grave, harmful, threatening)
4
negative(adjective, harmful, unfavorable, hurtful)
3
cataclysmic(adjective, dreadful, harmful, damaging)
3
internecine(adjective, violent, cruel, harmful)
3
sinful(adjective, bad, evil, nasty, harsh)
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APASmart Define. (2016). pernicious thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/pernicious/thesaurus/synonyms
ChicagoSmart Define. 2016. "pernicious thesaurus" https://smartdefine.org/pernicious/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, pernicious thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/pernicious/thesaurus/synonyms>.
MLASmart Define. "pernicious thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/pernicious/thesaurus/synonyms>