31 entries under simple topic. ×

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indolent(adjective, slow, stupid, boring)
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insensate(adjective, slow, stupid, boring)
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not bright(expression, adjective, slow, stupid)
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numskulled(adjective, slow, stupid, boring)
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scatterbrained(adjective, slow, stupid, boring)
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shallow(adjective, slow, stupid, boring)
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slow(adjective, stupid, sluggish, unintelligent)
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sluggish(adjective, slow, stupid, unintelligent)
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unintellectual(adjective, slow, stupid, boring)
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vacuous(adjective, slow, stupid, boring)
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wearisome(adjective, slow, stupid, boring)
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APASmart Define. (2015). addled thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/addled/thesaurus/synonyms
ChicagoSmart Define. 2015. "addled thesaurus" https://smartdefine.org/addled/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, addled thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/addled/thesaurus/synonyms>.
MLASmart Define. "addled thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/addled/thesaurus/synonyms>