1
fire-eater
1
firebrand
1
fratricide
1
fury
1
gainer(noun, bad)
1
gangster
1
garroter
1
gorilla
1
greets(expression, idiom, informal, greeting)
1
guerrilla(soldier, murderer, slayer)
1
gun person(expression, soldier, guerrilla, murderer, slayer)
1
gunfighter
1
gunperson(noun, murderer)
1
hangman
1
hard-hearted(adjective, mean, severe, harsh, cruel)
1
hardnose
1
harmer(noun, bad)
1
hatchet person(expression, soldier, guerrilla, murderer, slayer)
1
heartless(adjective, mean, harsh, cruel, vicious)
1
heavy
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APASmart Define. (2016). killer thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/killer/thesaurus/synonyms
ChicagoSmart Define. 2016. "killer thesaurus" https://smartdefine.org/killer/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, killer thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/killer/thesaurus/synonyms>.
MLASmart Define. "killer thesaurus" 30 March 2016. Web. 22 September 2026. <https://smartdefine.org/killer/thesaurus/synonyms>