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50 entries under insane topic. ×

2
bats in the belfry(expression, adjective, idiom, silly, mad)
2
flipped out(expression, adjective, silly, foolish, mad)
2
freaked out(expression, adjective, silly, foolish, mad)
2
mad as a March hare(expression, idiom, silly, foolish, mad)
2
mad as a hatter(expression, adjective, idiom, silly, mad)
2
nutty as fruitcake(expression, adjective, idiom, silly, mad)
2
of unsound mind(expression, adjective, idiom, silly, mad)
2
out to lunch(expression, adjective, idiom, silly, mad)
2
round the bend(expression, adjective, idiom, silly, mad)
2
screw loose(expression, adjective, silly, foolish, mad)
1
ape(adjective, silly, foolish, mad)
1
barmy(adjective, silly, foolish, mad)
1
batty(adjective, silly, foolish, mad)
1
berserk(adjective, silly, foolish, mad)
1
bonkers(adjective, silly, foolish, mad)
1
cracked(adjective, silly, foolish, mad)
1
crazed(adjective, silly, foolish, mad)
1
cuckoo(adjective, silly, foolish, mad)
1
daft(adjective, silly, foolish, mad)
1
delirious(adjective, silly, foolish, mad)
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APASmart Define. (1970). mentally strange thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/mentally_strange/thesaurus/synonyms
ChicagoSmart Define. 1970. "mentally strange thesaurus" https://smartdefine.org/mentally_strange/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 1970, mentally strange thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/mentally_strange/thesaurus/synonyms>.
MLASmart Define. "mentally strange thesaurus" 1 January 1970. Web. 29 September 2026. <https://smartdefine.org/mentally_strange/thesaurus/synonyms>