Synonyms|277Antonyms|133|Broader|2Narrower|0Related|570
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hearsay
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hollow
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ignis fatuus(expression, idiom, unsubstantiality)
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imagination
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importable
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improbable(poor, implausible, unconvincing)
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in nubibus(expression, idiom, inexistence)
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inane(poor, implausible, unconvincing)
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incoherent(foolish, unreasonable, illogical)
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inconceivable(poor, implausible, unconvincing)
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incredible(poor, implausible, unconvincing)
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ineffectual
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inept(poor, implausible, unconvincing)
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inequitable
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inessential(unwarranted, wanton, unfounded, uncalled-for)
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inexcusable
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injudicious(foolish, unreasonable, illogical)
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inoperative(adjective, worthless, unacceptable, incapacitated, unusable)
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insane(foolish, unreasonable, illogical)
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kooky(foolish, unreasonable, illogical)
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APASmart Define. (2015). baseless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/baseless/thesaurus/synonyms
ChicagoSmart Define. 2015. "baseless thesaurus" https://smartdefine.org/baseless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, baseless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/baseless/thesaurus/synonyms>.
MLASmart Define. "baseless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/baseless/thesaurus/synonyms>