128 entries under dull topic. ×

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settle down(verb, expression, calm, quiet)
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shortsighted(unintelligent, witless)
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sitting on(verb, expression, quell, quieten)
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slow on uptake(expression, adjective, idiom, slow)
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stupefied(unintelligent, witless)
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supine(adjective, heavy, stupid, impassive)
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torpid(slow, silly, stupid)
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unexcitable(adjective, heavy, stupid, impassive)
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APASmart Define. (2016). dumb thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms
ChicagoSmart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, dumb thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>.
MLASmart Define. "dumb thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms>