3
obduracy(noun, ruthlessness, mercilessness, relentlessness)
3
relentlessness(noun, ruthlessness, mercilessness)
3
rigor
3
roughness
2
animality(noun, cruelty, harshness, unkindness, callousness)
2
atrocity(cruelty, coldness, callousness, hardheartedness)
2
barbarism(noun, cruelty, harshness, unkindness, coldness)
2
bloodthirstiness(noun, cruelty, harshness, unkindness, coldness)
2
cold-bloodedness(noun, cruelty, harshness, unkindness, coldness)
2
ferociousness
2
fiendishness(noun, cruelty, harshness, unkindness, callousness)
2
fierceness(noun, cruelty, harshness, unkindness, callousness)
2
malevolence
2
malignity(noun, cruelty, harshness, unkindness, callousness)
2
murderousness(noun, cruelty, harshness, unkindness, callousness)
2
rigour
2
sadism(noun, cruelty, harshness, unkindness, callousness)
2
savageness(noun, cruelty, harshness, unkindness, callousness)
2
stoniness(noun, coldness)
2
unkindness(noun, cruelty, harshness, callousness, hardheartedness)
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APASmart Define. (2015). pitilessness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/pitilessness/thesaurus/synonyms
ChicagoSmart Define. 2015. "pitilessness thesaurus" https://smartdefine.org/pitilessness/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, pitilessness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/pitilessness/thesaurus/synonyms>.
MLASmart Define. "pitilessness thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/pitilessness/thesaurus/synonyms>