76 entries under cool topic. ×

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wooden(adjective, blank, aloof, unemotional)
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calm(adjective, relaxed, detached, casual)
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casual(adjective, calm, relaxed, detached)
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detached(adjective, calm, relaxed, casual)
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disinterested(adjective, calm, relaxed, detached)
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easy(adjective, calm, relaxed, detached)
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easygoing(adjective, calm, relaxed, detached)
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lackadaisical(adjective, calm, relaxed, detached)
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laid-back(adjective, calm, relaxed, casual)
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listless(adjective, calm, relaxed, detached)
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lukewarm(adjective, calm, relaxed, detached)
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mellow(adjective, calm, relaxed, detached)
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neutral(adjective, calm, relaxed, detached)
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offhand(adjective, calm, relaxed, detached)
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relaxed(adjective, calm, casual, offhand)
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untroubled(adjective, calm, relaxed, detached)
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APASmart Define. (2015). unimpressible thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unimpressible/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimpressible thesaurus" https://smartdefine.org/unimpressible/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unimpressible thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unimpressible/thesaurus/synonyms>.
MLASmart Define. "unimpressible thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/unimpressible/thesaurus/synonyms>