2
cold fish(expression, adjective, mean, feeling, hard)
2
coldblooded(adjective, mean, hard, harsh, cold)
2
depraved(adjective, bad, wrong, evil, nasty)
2
disinterested(adjective, mean, hard, cool, unpleasant)
2
dog-eat-dog(adjective, mean, hard, severe, harsh)
2
evil(adjective, bad, wrong, nasty, harsh)
2
feral(adjective, mean, hard, harsh, violent)
2
foul(adjective, wicked)
2
going with the flow(expression, adjective, idiom, detached, impassive)
2
immovable(adjective, mean, cool, detached, blank)
2
impious(adjective, bad, hard, wrong, evil)
2
indurated(adjective, hard, cool, careless, indifferent)
2
inexcitable(adjective, cool, blank, aloof, unemotional)
2
infuriated
2
insensate(adjective, hard, tough, severe, careless)
2
inured(adjective, hard, careless, indifferent, cruel)
2
irreverent(adjective, hard, wicked, unfeeling, unsympathetic)
2
listless(adjective, indifferent, detached, distant, apathetic)
2
loveless
2
monstrous(adjective, severe, evil, nasty, harsh)
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APASmart Define. (2016). heartless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/heartless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heartless thesaurus" https://smartdefine.org/heartless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, heartless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/heartless/thesaurus/synonyms>.
MLASmart Define. "heartless thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/heartless/thesaurus/synonyms>