39 entries under harmful topic. ×

5
internecine(adjective, violent, cruel, killing)
5
pestilential(adjective, bad, evil, injurious)
5
venomous(adjective, bad, evil, dangerous)
4
detrimental(adjective, bad, evil, dangerous)
3
fell(adjective, heavy, acute, major)
2
cancerous(adjective, injurious, damaging, deadly)
2
consumptive(adjective, injurious, damaging, deadly)
2
hurtful(adjective, bad, evil, injurious)
2
wreckful(adjective, injurious, damaging, deadly)
1
annihilative(adjective, injurious, damaging, deadly)
1
cutthroat(adjective, injurious, damaging, deadly)
1
eradicative(adjective, injurious, damaging, deadly)
1
evil(adjective, bad, corrupt, injurious)
1
extirpative(adjective, injurious, damaging, deadly)
1
lethiferous(adjective, killing, injurious, damaging)
1
noisome(adjective, bad, evil, injurious)
1
pestiferous(adjective, bad, evil, injurious)
1
slaughterous(adjective, grave, injurious, damaging)
1
wrackful(adjective, injurious, damaging, deadly)
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APASmart Define. (2016). fatal thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fatal/thesaurus/synonyms
ChicagoSmart Define. 2016. "fatal thesaurus" https://smartdefine.org/fatal/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, fatal thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fatal/thesaurus/synonyms>.
MLASmart Define. "fatal thesaurus" 3 April 2016. Web. 24 September 2026. <https://smartdefine.org/fatal/thesaurus/synonyms>