95 entries under insane topic. ×

3
rabid(adjective, keen, warm, passionate, excited)
3
unglued(adjective, crazy, mad, odd)
2
bats in the belfry(expression, idiom, silly, foolish, mad)
2
berserk(adjective, silly, foolish, crazy, mad)
2
flipped(silly, foolish, mad, unwise)
2
flipped out(expression, silly, foolish, crazy, mad)
2
freaked out(expression, silly, foolish, mad)
2
mad as a March hare(expression, idiom, silly, foolish, mad)
2
mad as a hatter(expression, adjective, idiom, silly, foolish)
2
madman(noun, adjective, crazy, mad, odd)
2
mentally strange(expression, silly, foolish, mad)
2
nutty as fruitcake(expression, idiom, silly, foolish, mad)
2
off one's head(expression, adjective, idiom, crazy, mad)
2
rash(adjective, crazy, mad, odd)
2
reckless(adjective, crazy, mad, odd)
2
screw loose(expression, silly, foolish, mad)
2
vehement(adjective, keen, warm, passionate, excited)
1
agonized(adjective, crazy, mad, odd)
1
ape(silly, foolish, crazy, mad)
1
dingy(silly, foolish, mad, unwise)
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APASmart Define. (2016). wacky thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/wacky/thesaurus/synonyms
ChicagoSmart Define. 2016. "wacky thesaurus" https://smartdefine.org/wacky/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, wacky thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/wacky/thesaurus/synonyms>.
MLASmart Define. "wacky thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/wacky/thesaurus/synonyms>