100 entries under noun topic. ×

16
ruthlessness(abuse, evil, dislike, violence)
11
pitilessness(cruelty, harshness, unkindness, coldness)
9
harshness(dislike, disagreement, advantage, hatred)
8
brutality(violence, severity, torture, cruelty)
8
inhumanity(violence, severity, torture, cruelty)
7
unmercifulness
5
savagery(violence, severity, torture, cruelty)
4
hardheartedness(torture, cruelty, harshness, malice)
4
heartlessness(violence, severity, torture, cruelty)
4
meanness(dislike, disagreement, advantage, head)
4
severity(violence, torture, cruelty, coarseness)
3
callousness(violence, severity, torture, cruelty)
3
hardness
3
relentlessness(ruthlessness, pitilessness)
2
animality(violence, severity, torture, cruelty)
2
atrocity(cruelty, coldness, viciousness, callousness)
2
barbarism(violence, severity, torture, cruelty)
2
barbarity(violence, severity, torture, cruelty)
2
bloodthirstiness(violence, severity, torture, cruelty)
2
cold-bloodedness(cruelty, harshness, unkindness, coldness)
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APASmart Define. (2015). mercilessness thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/mercilessness/thesaurus/synonyms
ChicagoSmart Define. 2015. "mercilessness thesaurus" https://smartdefine.org/mercilessness/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, mercilessness thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/mercilessness/thesaurus/synonyms>.
MLASmart Define. "mercilessness thesaurus" 21 December 2015. Web. 30 September 2026. <https://smartdefine.org/mercilessness/thesaurus/synonyms>