1
extirpative(adjective, harmful, injurious, damaging, deadly)
1
fateful
1
fell(adjective, harmful, injurious, damaging, deadly)
1
gory
1
hurtful(adjective, harmful, injurious, damaging, deadly)
1
injurious(adjective, violent, cruel, harmful, damaging)
1
interior
1
lethiferous(adjective, harmful, killing, injurious, damaging)
1
murderer
1
nihilist
1
nihilistic
1
noisome(adjective, harmful, injurious, damaging, deadly)
1
noxious(adjective, violent, cruel, harmful, injurious)
1
pestiferous(adjective, bad, violent, harmful, injurious)
1
pestilential(adjective, violent, cruel, harmful, injurious)
1
poisonous(adjective, injurious, damaging, destructive, fatal)
1
ravaging
1
ruining
1
savage
1
self-destructive
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APASmart Define. (2015). internecine thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/internecine/thesaurus/synonyms
ChicagoSmart Define. 2015. "internecine thesaurus" https://smartdefine.org/internecine/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, internecine thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/internecine/thesaurus/synonyms>.
MLASmart Define. "internecine thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/internecine/thesaurus/synonyms>