5
sanguineous(adjective, help, grave, aper, demoniac)
5
suicidal
4
devastating(adjective, difficult)
4
beastly(adjective, violent, wild, vicious, fierce)
4
dangerous(adjective, bad, strong, severe, difficult)
4
exhausting(adjective, difficult)
4
heartless
4
noxious(adjective, bad, offensive, violent, foul)
4
pernicious(adjective, nasty, violent, vicious, wicked)
4
ruinous(adjective, difficult, harmful, injurious, fatal)
4
severe(adjective, bad, offensive, violent, foul)
4
truculent(adjective, strong, severe, harsh, intense)
3
animal(feature, characteristic, strong, detail, violent)
3
atrocious
3
baneful(adjective, harmful, injurious, damaging, destructive)
3
bloody-minded(adjective, help)
3
dark
3
demoniac(adjective, harsh, violent, cruel, vicious)
3
difficult
3
fiendish
11 years ago|13k views|share |citing 
APASmart Define. (2015). murderous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/murderous/thesaurus/synonyms
ChicagoSmart Define. 2015. "murderous thesaurus" https://smartdefine.org/murderous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, murderous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/murderous/thesaurus/synonyms>.
MLASmart Define. "murderous thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/murderous/thesaurus/synonyms>