1
base(adjective, wicked)
1
blank(adjective, cool, detached, sober, unfeeling)
1
blind to(verb, expression, adjective, phrasal verb, hard)
1
bowed-down
1
bowelless
1
brassy
1
brazen
1
brutality
1
calloused
1
callused
1
cantankerous(adjective, hard, tough, severe, cruel)
1
careless(adjective, hard, indifferent, cruel, apathetic)
1
cast down
1
catatonic
1
churlish(adjective, hard, tough, severe, cruel)
1
cold as charity(expression, idiom)
1
cold blooded(adjective, aloof, unfeeling, senseless)
1
cold of heart(expression, idiom)
1
collected(adjective, cool, blank, aloof, unemotional)
1
comatose
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APASmart Define. (2016). heartless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/heartless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heartless thesaurus" https://smartdefine.org/heartless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, heartless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/heartless/thesaurus/synonyms>.
MLASmart Define. "heartless thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/heartless/thesaurus/synonyms>