110 entries under silly topic. ×

10
irrational(adjective, weak, simple, foolish)
10
nutty(adjective, weak, simple, foolish)
10
simple(adjective, dull, weak, slow)
9
dim-witted(adjective, simple, slow, foolish)
9
laughable(adjective, dull, absurd, unintelligent)
9
unintelligent(adjective, dull, weak, simple, slow)
8
dippy(adjective, weak, simple, knowledge, slang)
8
doltish(adjective, dull, weak, simple, slow)
8
loony(adjective, weak, simple, knowledge, ability)
8
unreasonable(adjective, weak, simple, foolish)
8
witless(adjective, dull, weak, simple, slow)
7
dotty(adjective, weak, simple, foolish)
6
half-baked(adjective, dull, weak, simple, slow)
6
wacky(adjective, weak, simple, knowledge, slang)
5
dense(adjective, dull, simple, slow)
5
obtuse(adjective, dull, simple, slow)
5
simple-minded(adjective, simple, slow, foolish)
4
batty(adjective, slow, foolish, stupid)
4
empty-headed(adjective, foolish, stupid)
4
feebleminded(adjective, weak, simple, foolish)
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APASmart Define. (2015). imbecilic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/imbecilic/thesaurus/synonyms
ChicagoSmart Define. 2015. "imbecilic thesaurus" https://smartdefine.org/imbecilic/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, imbecilic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/imbecilic/thesaurus/synonyms>.
MLASmart Define. "imbecilic thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/imbecilic/thesaurus/synonyms>