2
bloodthirstiness(noun, violence, severity, torture, cruelty)
2
cold-bloodedness(noun, cruelty, harshness, unkindness, coldness)
2
cruelness(violence, viciousness, fierceness)
2
fiendishness(noun, violence, severity, torture, cruelty)
2
inexorability(noun, ruthlessness, pitilessness, relentlessness)
2
inexorableness(noun, ruthlessness, pitilessness, relentlessness)
2
intensity(violence, viciousness, fierceness)
2
malice(noun, evil, violence, immorality, wickedness)
2
nastiness(noun, cruelty, spite, harshness, malice)
2
remorselessness(noun, coldness, hardheartedness, ruthlessness, pitilessness)
2
rigour
2
sadism(noun, violence, severity, torture, cruelty)
2
spite(noun, violence, torture, cruelty, harshness)
2
spitefulness(noun, violence, severity, torture, cruelty)
2
truculence(noun, violence, severity, torture, cruelty)
2
unkindness(noun, violence, severity, torture, cruelty)
2
vehemence(violence, viciousness, fierceness)
2
venom(noun, violence, torture, cruelty, spite)
2
viciousness(noun, violence, severity, torture, cruelty)
2
vindictiveness(noun, cruelty, spite, malice, unkindness)
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APASmart Define. (2015). mercilessness thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/mercilessness/thesaurus/synonyms
ChicagoSmart Define. 2015. "mercilessness thesaurus" https://smartdefine.org/mercilessness/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, mercilessness thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/mercilessness/thesaurus/synonyms>.
MLASmart Define. "mercilessness thesaurus" 21 December 2015. Web. 27 September 2026. <https://smartdefine.org/mercilessness/thesaurus/synonyms>