Synonyms|550Antonyms|241|Broader|8Narrower|5Related|1.6k
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ill-advised
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ill-considered
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ill-judged
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illogical
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illogically
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imbecile
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imbecilic
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impassive
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impenetrable
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imperceptive
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impetuous
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impish
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improvident
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imprudent
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inactive
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inadvertent
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inadvisable
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inattentive
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incautious
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incompetent
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APASmart Define. (2016). sagacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sagacious/thesaurus/antonyms
ChicagoSmart Define. 2016. "sagacious thesaurus" https://smartdefine.org/sagacious/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sagacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sagacious/thesaurus/antonyms>.
MLASmart Define. "sagacious thesaurus" 22 March 2016. Web. 24 September 2026. <https://smartdefine.org/sagacious/thesaurus/antonyms>