96 entries under stupid topic. ×

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absent-minded(careless, unthinking, obtuse, unperceptive)
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dimwitted(adjective, silly, green, fat)
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fat(adjective, silly, green, thick)
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feeble(adjective, silly, green, fat)
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inadvertent(careless, thoughtless, unthinking, inconsiderate)
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incomprehensible(careless, unthinking, obtuse, unperceptive)
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indolent(adjective, simple, slow, boring)
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inexpert(adjective, silly, green, fat)
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irreflective(careless, unthinking, obtuse, unperceptive)
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mentally handicapped(expression, silly, foolish)
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not intelligent(expression, silly, foolish)
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regardless(careless, unthinking, obtuse, unperceptive)
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remiss(careless, unthinking, obtuse, unperceptive)
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soft-headed(adjective, silly, green, fat)
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unobservant(careless, unthinking, obtuse, unperceptive)
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wearisome(adjective, simple, slow, boring)
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APASmart Define. (2015). witless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/witless/thesaurus/synonyms
ChicagoSmart Define. 2015. "witless thesaurus" https://smartdefine.org/witless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, witless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/witless/thesaurus/synonyms>.
MLASmart Define. "witless thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/witless/thesaurus/synonyms>