250 entries under adjective topic. ×

1
impenetrable(hard, cruel, unfeeling, unsympathetic)
1
impenitent(hard, careless, indifferent, cruel)
1
impious(hard, unfeeling, unsympathetic, hardened)
1
implacable(mean, hard, severe, harsh)
1
inaccessible(hard, unfeeling, unsympathetic, hardened)
1
infamous
1
inflexible(hard, severe, harsh, careless)
1
insensible(mean, hard, harsh, careless)
1
insentient(hard, careless, indifferent, cruel)
1
insusceptible(hard, insensitive, unsusceptible)
1
iron-fisted(mean, severe, harsh, cruel)
1
irreverent(hard, unfeeling, unsympathetic, hardened)
1
malign
1
mean machine(expression, mean, severe, harsh)
1
mortal(mean, severe, harsh, cruel)
1
obtuse(hard, indifferent, unfeeling, unsympathetic)
1
prepared(hard, unfeeling, unsympathetic, hardened)
1
remorseless(mean, hard, harsh, cold)
1
savage(mean, hard, harsh, cold)
1
seasoned(hard, unfeeling, unsympathetic, hardened)
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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>