Synonyms|839Antonyms|185|Broader|7Narrower|18Related|410

53 entries under adjective topic. ×

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flighty
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flippant
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forgetful
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frivolous
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giddy
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harebrained
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hasty
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haughty
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heedless
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inadvertent
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inattentive
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incautious
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inconsiderate
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indolent
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irresponsible
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languid
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lightheaded
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listless
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neglectful
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negligent
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APASmart Define. (2016). fastidious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fastidious/thesaurus/antonyms
ChicagoSmart Define. 2016. "fastidious thesaurus" https://smartdefine.org/fastidious/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, fastidious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fastidious/thesaurus/antonyms>.
MLASmart Define. "fastidious thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/fastidious/thesaurus/antonyms>