97 entries under cool topic. ×

1
stoical(adjective, indifferent, detached, blank)
1
stony-eyed(adjective, detached, blank, sober)
1
taciturn(adjective, blank, aloof, unemotional)
1
toneless(adjective, detached, blank, sober)
1
uncongenial(adjective, mean, hard, unpleasant)
1
unexcitable(adjective, detached, blank, aloof)
1
unpleasant(adjective, mean, hard, cold)
1
unruffled(adjective, blank, aloof, unemotional)
1
with straight face(expression, adjective, idiom, detached)
1
wooden(adjective, blank, aloof, unemotional)
0
impersonal(adjective, detached, blank, sober)
0
imperturbable(adjective, cold, cruel, blank)
0
unimpressible(adjective, mean, hard, tough)
0
calm(adjective, detached, sober, unemotional)
0
sober(adjective, detached, unemotional)
0
stolid(adjective, blank, aloof, unemotional)
0
unflappable(adjective, blank, aloof, unemotional)
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APASmart Define. (2016). heartless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heartless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heartless thesaurus" https://smartdefine.org/heartless/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, heartless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heartless/thesaurus/synonyms>.
MLASmart Define. "heartless thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/heartless/thesaurus/synonyms>