Synonyms|92Antonyms|3|Broader|0Narrower|0Related|91

43 entries under adjective topic. ×

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fatuous
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foolish
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footling
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gormless
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greyer
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heavier
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idiotic
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ignorant
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impenetrable
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inane
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inept
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inert
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leaden
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obtuse
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outer
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quieter
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sappy
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slow
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slower
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speechless
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APASmart Define. (2013). dumber thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/dumber/thesaurus/synonyms
ChicagoSmart Define. 2013. "dumber thesaurus" https://smartdefine.org/dumber/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, dumber thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/dumber/thesaurus/synonyms>.
MLASmart Define. "dumber thesaurus" 19 May 2013. Web. 23 September 2026. <https://smartdefine.org/dumber/thesaurus/synonyms>