100 entries under harmful topic. ×

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chancy(injurious, detrimental)
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degenerate(evil, shameful, injurious, depraved)
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demoralizing(injurious, detrimental)
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despiteful(adjective, mean, evil, nasty, negative)
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disaffected(adjective, hostile, antagonistic, contrary)
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inimicable(adjective, hostile, antagonistic, contrary)
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insulting(distressing, damaging)
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jeopardous(injurious, detrimental)
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libeling(distressing, damaging)
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nefarious(evil, shameful, injurious, depraved)
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negative(injurious, hurtful, detrimental)
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nocent(distressing, damaging)
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opprobrious(offensive, unpleasant, distasteful, obnoxious, distressing)
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perverse(injurious, detrimental)
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slanderous(distressing, damaging)
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unconducive(distressing, damaging)
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undesirable(offensive, unpleasant, obnoxious, injurious)
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unjust(distressing, damaging)
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villainous(injurious, detrimental)
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wrongful(distressing, damaging)
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APASmart Define. (2015). noxious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/noxious/thesaurus/synonyms
ChicagoSmart Define. 2015. "noxious thesaurus" https://smartdefine.org/noxious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, noxious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/noxious/thesaurus/synonyms>.
MLASmart Define. "noxious thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/noxious/thesaurus/synonyms>