Synonyms|114Antonyms|30|Broader|0Narrower|0Related|113
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pleasant(adjective, calm, cool)
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relaxed
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self-assured
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self-controlled
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sure
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unafraid(adjective, calm, cool)
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unfearful(adjective, calm, cool)
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unflappable
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unshakable
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unworried(adjective, calm, cool)
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APASmart Define. (2015). aflutter thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/aflutter/thesaurus/antonyms
ChicagoSmart Define. 2015. "aflutter thesaurus" https://smartdefine.org/aflutter/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, aflutter thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/aflutter/thesaurus/antonyms>.
MLASmart Define. "aflutter thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/aflutter/thesaurus/antonyms>