157 entries under casual topic. ×

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easily pleased(expression, unfussy, cursory)
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effortless(adjective, calm, cool, relaxed, detached)
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fluke
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folksy(indifferent, nonchalant)
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imperturbable(adjective, calm, cool, relaxed)
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incidental
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mellow(adjective, calm, cool, relaxed, indifferent)
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placid(adjective, calm, cool, relaxed)
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speedy(quick, hasty, superficial, hurried)
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uncoordinated
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unemotional(adjective, calm, hard, cool, relaxed)
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unexacting(unfussy, cursory)
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unexcited(adjective, calm, cool, relaxed, detached)
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unflappable(adjective, calm, cool, relaxed)
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unimpressible(adjective, calm, cool, relaxed, detached)
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unruffled(adjective, calm, cool, relaxed, indifferent)
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willy-nilly
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APASmart Define. (2016). careless thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/careless/thesaurus/synonyms
ChicagoSmart Define. 2016. "careless thesaurus" https://smartdefine.org/careless/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, careless thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/careless/thesaurus/synonyms>.
MLASmart Define. "careless thesaurus" 3 March 2016. Web. 30 September 2026. <https://smartdefine.org/careless/thesaurus/synonyms>