185 entries under harmful topic. ×

11
virulent(adjective, help, dead, deadly)
10
calamitous(adjective, bad, evil, harm, wicked)
10
disastrous(adjective, bad, evil, harm, wicked)
9
damaging(adjective, negative, distressing, adverse)
8
lethal(adjective, injurious, damaging, deadly)
8
noisome(adjective, bad, evil, offensive, immoral)
8
unwholesome(adjective, offensive, foul, disgusting, unhealthy)
7
dangerous(adjective, offensive, foul, disgusting)
7
mortal(adjective, harm, injurious, damaging)
7
prejudicial(adjective, harm, dead, distressing)
7
vicious(adjective, evil, negative, poison)
6
devastating(adjective, harm, destruction, dead)
6
dire(adjective, dark, grim, ugly)
6
disadvantageous(adjective, lean, distressing, injurious)
6
insalubrious(evil, offensive, foul, disgusting)
6
menacing(adjective, evil, threatening, injurious)
6
nocuous(evil, distressing, injurious, damaging)
6
pestiferous(adjective, bad, evil, injurious)
6
threatening(evil, warning, menacing, unfavorable)
5
catastrophic(adjective, injurious, damaging, deadly)
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APASmart Define. (2015). baneful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/baneful/thesaurus/synonyms
ChicagoSmart Define. 2015. "baneful thesaurus" https://smartdefine.org/baneful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, baneful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/baneful/thesaurus/synonyms>.
MLASmart Define. "baneful thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/baneful/thesaurus/synonyms>