140 entries under foolish topic. ×

2
round the bend(expression, idiom, silly, mad)
2
screw loose(expression, silly, mad, insane)
2
strange(silly, unwise)
2
unreasonable(adjective, weak, simple, silly)
2
unwise(weak, simple, silly, thoughtless)
1
ape(silly, crazy, mad, insane)
1
birdbrained(silly, crazy, insane, unintelligent)
1
bizarre(adjective, wrong, wild, silly)
1
brainless(weak, simple, silly, thoughtless)
1
cockamamy(silly, thoughtless, unwise, unintelligent)
1
derailed(adjective, wrong, wild, silly)
1
dingy(silly, mad, insane, unwise)
1
doltish(weak, simple, silly, thoughtless)
1
dull(silly, crazy, insane, unintelligent)
1
erratic(adjective, wild, silly, crazy)
1
feebleminded(weak, simple, silly, thoughtless)
1
flipped(silly, hot, crazy, mad)
1
ill-advised(weak, simple, silly, thoughtless)
1
ill-considered(weak, simple, silly, thoughtless)
1
impractical(adjective, wrong, wild, silly)
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APASmart Define. (2015). lunatic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/lunatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/lunatic/thesaurus/synonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 26 September 2026. <https://smartdefine.org/lunatic/thesaurus/synonyms>