100 entries under hard topic. ×

2
insensate(adjective, careless, indifferent, cruel)
2
intolerant(adjective, cold, cruel, unfeeling)
2
inured(adjective, careless, indifferent, cruel)
2
relentless(adjective, mean, severe, harsh)
2
resistant(adjective, unfeeling, unsympathetic, hardened)
2
steeled(adjective, unfeeling, unsympathetic, hardened)
1
accustomed(adjective, unfeeling, unsympathetic, hardened)
1
austere(adjective, mean, severe, harsh)
1
barbarous(adjective, mean, severe, harsh)
1
benumbed(adjective, cruel, unfeeling, unsympathetic)
1
blind to(expression, adjective, careless, indifferent)
1
careless(adjective, indifferent, cruel, apathetic)
1
contemptuous(adjective, unfeeling, unsympathetic, hardened)
1
deaf to(expression, adjective, careless, indifferent)
1
disdainful(adjective, unfeeling, unsympathetic, hardened)
1
feelingless(adjective, indifferent, cruel, unsympathetic)
1
habituated(adjective, unfeeling, unsympathetic, hardened)
1
hard-as-nails(adjective, unfeeling, unsympathetic, hardened)
1
hard-bitten(adjective, careless, indifferent, cruel)
1
hard as nails(expression, adjective, idiom, indifferent)
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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>