250 entries under adjective topic. ×

1
deaf to(expression, hard, careless, indifferent)
1
demoniacal
1
diabolical
1
disagreeable
1
disdainful(hard, unfeeling, unsympathetic, hardened)
1
evil
1
evil-minded
1
feelingless(hard, indifferent, cruel, unsympathetic)
1
fierce(mean, severe, harsh, cruel)
1
flagituous
1
gothly
1
gratuitous(mean, severe, harsh, cruel)
1
habituated(hard, unfeeling, unsympathetic, hardened)
1
hard-as-nails(hard, unfeeling, unsympathetic, hardened)
1
hard-bitten(hard, careless, indifferent, cruel)
1
hard as nails(expression, idiom, hard, indifferent)
1
hatchet job(expression, mean, severe, harsh)
1
having a killer instinct(expression, idiom, mean, severe)
1
hostile
1
impassive(hard, careless, indifferent, cruel)
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APASmart Define. (2016). hardhearted thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hardhearted/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardhearted thesaurus" https://smartdefine.org/hardhearted/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, hardhearted thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hardhearted/thesaurus/synonyms>.
MLASmart Define. "hardhearted thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/hardhearted/thesaurus/synonyms>