Synonyms|511Antonyms|165|Broader|5Narrower|0Related|1.3k

96 entries under insane topic. ×

3
flaky(adjective, wild, silly, foolish, stupid)
3
thick-witted(adjective, foolish, stupid, crazy)
2
bats in the belfry(expression, idiom, silly, foolish, mad)
2
birdbrained(adjective, silly, foolish, stupid, crazy)
2
bonkers(adjective, simple, silly, foolish, crazy)
2
crazed(adjective, wild, silly, foolish, stupid)
2
deranged(adjective, wild, silly, foolish, stupid)
2
flipped out(expression, silly, foolish, crazy, mad)
2
freaked out(expression, silly, foolish, crazy, mad)
2
impractical(adjective, wrong, wild, silly, foolish)
2
imprudent(adjective, weak, simple, wild, strange)
2
kooky(weak, simple, silly, foolish, crazy)
2
mad as a March hare(expression, idiom, silly, foolish, mad)
2
mad as a hatter(expression, idiom, silly, foolish, mad)
2
maniacal(adjective, mind, think, silly, crazy)
2
mentally strange(expression, silly, foolish, mad)
2
moonstruck(adjective, silly, foolish, stupid, mad)
2
nutty as fruitcake(expression, idiom, silly, foolish, mad)
2
of unsound mind(expression, idiom, silly, stupid, mad)
2
out to lunch(expression, idiom, dull, silly, mad)
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APASmart Define. (2016). idiotic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/idiotic/thesaurus/synonyms
ChicagoSmart Define. 2016. "idiotic thesaurus" https://smartdefine.org/idiotic/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, idiotic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/idiotic/thesaurus/synonyms>.
MLASmart Define. "idiotic thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/idiotic/thesaurus/synonyms>