10
merciless(adjective, brutal, atrocious, barbaric, barbarous)
10
ruthless(adjective, brutal, atrocious, barbaric, barbarous)
10
uncompassionate(adjective, mean, brutal, atrocious, barbaric)
9
hard-boiled(adjective, brutal, atrocious, barbaric, barbarous)
9
malevolent(adjective, brutal, atrocious, barbaric, barbarous)
9
pitiless(adjective, brutal, atrocious, barbaric, barbarous)
9
savage(adjective, brutal, atrocious, barbaric, barbarous)
9
severe(adjective, brutal, atrocious, barbaric, barbarous)
8
inconsiderate(adjective, brutal, atrocious, barbaric, barbarous)
7
barbarous(adjective, brutal, atrocious, barbaric, bestial)
7
cold-hearted(adjective, brutal, atrocious, barbaric, barbarous)
7
greedy(adjective, selfish, rapacious, avaricious)
7
hard(adjective, brutal, atrocious, barbaric, barbarous)
7
hateful(adjective, brutal, atrocious, barbaric, barbarous)
7
inhumane(adjective, brutal, atrocious, barbaric, barbarous)
7
malignant(adjective, brutal, atrocious, barbaric, barbarous)
7
mean(adjective, brutal, atrocious, barbaric, barbarous)
7
not good
7
truculent(adjective, brutal, atrocious, barbaric, barbarous)
7
uncharitable(adjective, brutal, atrocious, barbaric, barbarous)
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APASmart Define. (2016). kindhearted thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/kindhearted/thesaurus/antonyms
ChicagoSmart Define. 2016. "kindhearted thesaurus" https://smartdefine.org/kindhearted/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, kindhearted thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/kindhearted/thesaurus/antonyms>.
MLASmart Define. "kindhearted thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/kindhearted/thesaurus/antonyms>