60 entries under indifferent topic. ×

3
apathetic(adjective, hard, careless, cruel)
3
thick-skinned(adjective, hard, careless, cruel)
3
unconcerned(adjective, hard, careless, cruel)
2
case-hardened(adjective, hard, careless, cruel)
2
coldblooded(adjective, mean, hard, harsh, cold)
2
harsh(adjective, mean, hard, severe, cold)
2
indurated(adjective, hard, careless, cruel)
2
insensate(adjective, hard, careless, cruel)
2
inured(adjective, hard, careless, cruel)
1
austere(adjective, mean, hard, severe, harsh)
1
blind to(expression, adjective, hard, careless)
1
careless(adjective, hard, cruel, apathetic)
1
deaf to(expression, adjective, hard, careless)
1
feelingless(adjective, hard, cruel, unsympathetic)
1
hard-bitten(adjective, hard, careless, cruel)
1
hard as nails(expression, adjective, idiom, hard)
1
impassive(adjective, hard, careless, cruel)
1
impenitent(adjective, hard, careless, cruel)
1
inflexible(adjective, hard, severe, harsh, careless)
1
insensible(adjective, mean, hard, harsh, careless)
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APASmart Define. (2016). hardhearted thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hardhearted/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardhearted thesaurus" https://smartdefine.org/hardhearted/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, hardhearted thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hardhearted/thesaurus/synonyms>.
MLASmart Define. "hardhearted thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/hardhearted/thesaurus/synonyms>