124 entries under foolish topic. ×

5
daffy(adjective, weak, simple, slow, silly)
5
dim-witted(adjective, dull, simple, slow)
5
dizzy(adjective, simple, careless, stupid)
5
half-baked(adjective, dull, weak, simple, slow)
5
obtuse(adjective, dull, simple, slow, silly)
5
wacky(weak, simple, silly, unreasonable)
4
blockheaded(adjective, simple, slow, stupid)
4
dimwitted(adjective, simple, silly, stupid)
4
dippy(weak, simple, silly, stupid)
4
dotty(adjective, weak, simple, silly)
4
featherbrained(adjective, simple, careless, stupid)
4
frivolous(adjective, simple, careless, stupid)
4
unreasoning(unreasonable, illogical, imbecility folly)
3
crackpot(adjective, impractical, half-baked, doomed)
3
dense(adjective, dull, simple, slow, silly)
3
harebrained(adjective, weak, simple, careless, silly)
3
jerky(adjective, weak, simple, silly)
3
ludicrous(adjective, dull, weak, simple, silly)
3
ridiculous(adjective, weak, simple, silly)
3
short-sighted(adjective, weak, simple, silly)
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APASmart Define. (2016). brainless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/brainless/thesaurus/synonyms
ChicagoSmart Define. 2016. "brainless thesaurus" https://smartdefine.org/brainless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, brainless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/brainless/thesaurus/synonyms>.
MLASmart Define. "brainless thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/brainless/thesaurus/synonyms>