Synonyms|1kAntonyms|187|Broader|19Narrower|0Related|760
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backbreaking
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bashful
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buttoned up(expression, clear, careless)
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cagey
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calculating
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canny(open, honest, careless)
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cherish
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chicken
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chickenhearted
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clammed up(expression, clear, careless)
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confirmed
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conservative
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consider
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considered
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cool
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cool as cucumber(expression, idiom, careless, unsound)
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coolheaded(careless, unsound)
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courteous
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dastardly
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decorous
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APASmart Define. (2015). reckless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/reckless/thesaurus/antonyms
ChicagoSmart Define. 2015. "reckless thesaurus" https://smartdefine.org/reckless/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, reckless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/reckless/thesaurus/antonyms>.
MLASmart Define. "reckless thesaurus" 3 August 2015. Web. 21 September 2026. <https://smartdefine.org/reckless/thesaurus/antonyms>