110 entries under silly topic. ×

4
half-witted(adjective, dull, weak, simple)
4
illogical(adjective, stupid, insignificant, unreasonable)
4
jerky(adjective, weak, simple, knowledge, slang)
4
unthinking(adjective, dull, simple, slow)
3
daffy(adjective, weak, simple, slow)
3
lunatic(adjective, weak, simple, knowledge, ability)
3
short-sighted(adjective, weak, simple, foolish)
3
simpleminded(adjective, dull, foolish, stupid)
3
slow(adjective, dull, simple, foolish)
3
thoughtless(adjective, foolish, stupid, senseless)
3
weak(adjective, simple, foolish, thoughtless)
3
zany(adjective, weak, simple, knowledge, ability)
2
fantastic(adjective, weak, simple, foolish)
2
harebrained(adjective, weak, simple, knowledge, ability)
2
imprudent(adjective, weak, simple, foolish)
2
meaningless(adjective, dull, simple, slow)
2
pointless(adjective, dull, simple, slow)
2
scatterbrained(adjective, simple, slow, foolish)
2
unwise(adjective, weak, simple, foolish)
1
cockamamy(thoughtless, unwise)
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APASmart Define. (2015). imbecilic thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/imbecilic/thesaurus/synonyms
ChicagoSmart Define. 2015. "imbecilic thesaurus" https://smartdefine.org/imbecilic/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, imbecilic thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/imbecilic/thesaurus/synonyms>.
MLASmart Define. "imbecilic thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/imbecilic/thesaurus/synonyms>