Synonyms|133Antonyms|49|Broader|0Narrower|0Related|915
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frivolity
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giddier
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hebetate
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heedless(adjective, careless, wild, stupid, unthinking)
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immoderate
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insipient
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irresolute(adjective, careless, inconstant, giddy)
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jackass
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juggins
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lacking seriousness(expression, idiom)
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lightheade(adjective, careless, inconstant, giddy)
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pathetic
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pinheaded
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revolves
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rotaries
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rotates
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rotations
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simper
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spinning
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spins
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APASmart Define. (2015). featherbrained thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/featherbrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "featherbrained thesaurus" https://smartdefine.org/featherbrained/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, featherbrained thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/featherbrained/thesaurus/synonyms>.
MLASmart Define. "featherbrained thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/featherbrained/thesaurus/synonyms>