Synonyms|437Antonyms|61|Broader|7Narrower|0Related|1.2k

50 entries under insane topic. ×

3
demented(adjective, silly, foolish, crazy, mad)
3
mental(noun, adjective, slang, silly, mad)
3
round the bend(expression, idiom, silly, foolish, mad)
3
schizo(noun, slang, silly, foolish, mad)
2
bats in the belfry(expression, idiom, silly, foolish, mad)
2
flipped(silly, foolish, mad, unwise)
2
flipped out(expression, silly, foolish, crazy, mad)
2
freaked out(expression, silly, foolish, mad)
2
fruity(silly, foolish, mad, unwise)
2
idiotic(adjective, silly, foolish, mad)
2
mad as a March hare(expression, idiom, silly, foolish, mad)
2
mad as a hatter(expression, idiom, silly, foolish, mad)
2
mentally strange(expression, silly, foolish, mad)
2
nutty as fruitcake(expression, idiom, silly, foolish, mad)
2
of unsound mind(expression, idiom, silly, foolish, mad)
2
out to lunch(expression, adjective, idiom, silly, crazy)
2
screw loose(expression, silly, foolish, mad)
1
ape(silly, foolish, crazy, mad)
1
berserk(silly, foolish, crazy, mad)
1
cracked(adjective, silly, foolish, crazy, mad)
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APASmart Define. (2015). screwball thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/screwball/thesaurus/synonyms
ChicagoSmart Define. 2015. "screwball thesaurus" https://smartdefine.org/screwball/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, screwball thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/screwball/thesaurus/synonyms>.
MLASmart Define. "screwball thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/screwball/thesaurus/synonyms>