287 entries under adjective topic. ×

9
nonsensical(dull, foolish, stupid, half-baked)
9
thick-witted(ability, foolish, stupid, crazy)
9
unintelligent(dull, simple, slow, silly)
8
blockheaded(dull, simple, ability, slow)
8
dimwitted(dull, simple, slang, ability)
8
loony(foolish, impractical, unintelligent, half-baked)
8
witless(dull, simple, slow, silly)
7
ignorant(dull, simple, slow, silly)
7
incoherent(quiet, soft, still, confused)
7
nutty
7
unresponsive(calm, quiet, humble, shy)
7
vacuous(simple, slow, stupid, empty)
6
absurd(foolish, impractical, unintelligent, half-baked)
6
empty-headed(simple, silly, foolish, stupid)
6
aphonic(silent, dazed, astonished, thunderstruck)
6
backward(dull, simple, slow, silly)
6
brain-dead(stupid, absence or want of intellect)
6
daft(simple, slow, silly, foolish)
6
fool(noun, absence or want of intellect)
6
half-baked(dull, simple, slow, silly)
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APASmart Define. (2016). dumb thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms
ChicagoSmart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dumb thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>.
MLASmart Define. "dumb thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms>