110 entries under insane topic. ×

3
loopy(adjective, crazy, mad, odd)
3
neurotic(adjective, agitated, overexcited, preoccupied)
3
nonsensical(adjective, crazy, mad, odd)
3
of unsound mind(expression, adjective, idiom, silly, foolish)
3
off-the-wall(adjective, crazy, mad, odd)
3
psychotic
3
twisted(adjective, crazy, mad, odd)
2
agitated(adjective, upset, wild, mad)
2
ape(silly, foolish, crazy, mad)
2
bats in the belfry(expression, idiom, silly, foolish, mad)
2
bonkers(adjective, silly, foolish, crazy, mad)
2
cracked(adjective, silly, foolish, crazy, mad)
2
cuckoo(adjective, silly, foolish, crazy, mad)
2
demoniac(adjective, lunatic)
2
flipped(adjective, wild, enthusiastic, silly, foolish)
2
flipped out(expression, adjective, wild, silly, foolish)
2
freaked out(expression, adjective, wild, enthusiastic, silly)
2
mad as a March hare(expression, idiom, silly, foolish, mad)
2
mad as a hatter(expression, idiom, silly, foolish, mad)
2
mental(adjective, silly, foolish, crazy, mad)
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APASmart Define. (2015). delirious thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/delirious/thesaurus/synonyms
ChicagoSmart Define. 2015. "delirious thesaurus" https://smartdefine.org/delirious/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, delirious thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/delirious/thesaurus/synonyms>.
MLASmart Define. "delirious thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/delirious/thesaurus/synonyms>