154 entries under cool topic. ×

8
collected(adjective, calm, quiet, moderate)
8
heartless(adjective, hard, careless, indifferent)
8
insouciant(adjective, calm, relaxed, cold)
8
matter-of-fact(adjective, calm, dull, simple)
8
neutral(adjective, calm, quiet, moderate)
8
spiritless(adjective, dull, hard, weak)
8
unexcitable(adjective, calm, dull, quiet)
7
insusceptible(adjective, hard, affect, dead)
7
quiet(adjective, calm, relaxed, restrained)
7
taciturn(adjective, blank, aloof, unemotional)
7
unruffled(adjective, calm, quiet, moderate)
6
immovable(adjective, secure, steady, detached)
6
impersonal(adjective, calm, tough, temper)
6
inscrutable(adjective, dull, quiet, moderate)
6
quiescent(adjective, quiet, secure, still)
6
restful(adjective, quiet, moderate, gentle)
6
still(adjective, quiet, moderate, gentle)
6
undisturbed(adjective, quiet, moderate, gentle)
6
wooden(adjective, dull, dead, blank)
5
distant(adjective, indifferent, restrained, detached)
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APASmart Define. (2015). impassive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>