174 entries under foolish topic. ×

4
screwy(adjective, simple, strange, stupid)
4
trivial(adjective, dull, simple, slight, poor)
3
bone-headed
3
bonkers(adjective, simple, silly, unsound)
3
chuckle-headed
3
daffy(adjective, simple, silly, stupid)
3
dense(adjective, dull, simple, slow, silly)
3
eccentric(adjective, silly, fantastic, absurd)
3
feeble-minded(adjective, stupid, impractical, half-baked)
3
foolhardy(adjective, silly, stupid, crazy)
3
half-witted(adjective, dull, simple, slow, silly)
3
inconsistent(adjective, simple, silly, stupid)
3
irresponsible(adjective, careless, silly, stupid)
3
knuckle-headed
3
kooky(adjective, silly, unwise)
3
lame-brained
3
lunatic(adjective, simple, silly, crazy)
3
meat-headed
3
nitwit
3
obtuse(adjective, dull, simple, slow, careless)
11 years ago|14k views|share |citing 
APASmart Define. (2015). inane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inane/thesaurus/synonyms
ChicagoSmart Define. 2015. "inane thesaurus" https://smartdefine.org/inane/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, inane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inane/thesaurus/synonyms>.
MLASmart Define. "inane thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/inane/thesaurus/synonyms>