135 entries under heartless topic. ×

10
senseless(adjective, bad, hard, tough, severe)
10
severe(adjective, calm, mean, hard, tough)
9
barbarous(adjective, mean, hard, severe, evil)
9
stiff(adjective, set, strong, hard, severe)
9
stony-hearted(adjective, cold, cruel, unfeeling, unsympathetic)
9
unmerciful(adjective, mean, severe, harsh, cruel)
9
unmoved(adjective, calm, mean, hard, cool)
8
obtuse(noun, adjective, hard, indifferent, apathetic)
7
coldhearted(adjective, hard, cold, indifferent, detached)
7
impenitent(adjective, hard, tough, harsh, cruel)
7
mean(verb, adjective, hard, cool, tough)
7
savage(adjective, mean, hard, rough, harsh)
7
steely(adjective, cold, cruel, unfeeling, unsympathetic)
7
unsusceptible(noun, adjective, hard, indifferent, cruel)
6
adamant(adjective, person, mean, hard, rough)
6
anesthetized(adjective, hard, tough, severe, cruel)
6
inhumane(adjective, mean, hard, severe, evil)
6
soulless(adjective, mean, hard, harsh, cold)
6
stern(adjective, mean, hard, tough, severe)
6
toughened(noun, adjective, hard, cruel, unfeeling)
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APASmart Define. (2016). callous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/callous/thesaurus/synonyms
ChicagoSmart Define. 2016. "callous thesaurus" https://smartdefine.org/callous/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, callous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/callous/thesaurus/synonyms>.
MLASmart Define. "callous thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/callous/thesaurus/synonyms>