97 entries under cool topic. ×

9
detached(adjective, person, hard, indifferent)
9
frigid(adjective, person, mean, hard)
9
uncharitable(adjective, person, mean, hard)
8
dispassionate(adjective, cold, indifferent, cruel)
8
unconcerned(adjective, mean, hard, unpleasant)
7
impassive(adjective, hard, careless, indifferent)
7
mean(verb, adjective, bad, hard)
7
passionless(adjective, indifferent, detached, blank)
7
unpitying(adjective, mean, hard, severe)
6
emotionless(adjective, detached, blank, aloof)
6
icy(adjective, mean, hard, tough)
6
thick-skinned(adjective, mean, feeling, hard)
6
unresponsive(adjective, mean, hard, unpleasant)
5
insensible(adjective, hard, tough, severe)
5
nonchalant(adjective, indifferent, detached, blank)
5
spiritless(adjective, hard, careless, indifferent)
3
insusceptible(adjective, hard, blank, aloof)
3
stoic(adjective, blank, aloof, impassive)
2
unimpassioned(adjective, detached, blank, sober)
2
chill(adjective, detached, blank, sober)
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APASmart Define. (2016). heartless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/heartless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heartless thesaurus" https://smartdefine.org/heartless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, heartless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/heartless/thesaurus/synonyms>.
MLASmart Define. "heartless thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/heartless/thesaurus/synonyms>