illogical

as in irrational
not using or following good reasoning the illogical claim that playing basketball makes people taller because one sees so many tall players illogical people are likely to believe every sensational claim made on TV

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“Illogical.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illogical. Accessed 31 Jan. 2023.

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