Synonyms|685Antonyms|120|Broader|3Narrower|0Related|2k

84 entries under insane topic. ×

8
unhinged(adjective, silly, foolish, crazy, mad)
7
flaky(adjective, light, wrong, unusual, wild)
7
odd(adjective, unusual, wild, strange, silly)
7
screwball(adjective, silly, foolish, crazy, mad)
6
crack-brained
6
erratic(adjective, unusual, wild, strange, silly)
6
maniacal(adjective, silly, stupid, crazy, mad)
6
of unsound mind(expression, adjective, idiom, silly, mad)
5
berserk(adjective, wild, enthusiastic, silly, foolish)
5
moonstruck(adjective, silly, foolish, stupid, mad)
5
neurotic(adjective, crazy, cuckoo, lunatic)
5
out to lunch(expression, adjective, idiom, silly, mad)
5
unsound(adjective, wrong, silly, foolish, stupid)
4
brainsick(adjective, sane)
4
delirious(adjective, wrong, wild, enthusiastic, silly)
4
harebrained(adjective, weak, simple, wild, silly)
4
psycho(adjective, silly, foolish, crazy, mad)
4
unreasonable(adjective, weak, simple, wrong, silly)
3
flipped(adjective, wild, enthusiastic, silly, foolish)
3
frenzied(adjective, wrong, silly, foolish, stupid)
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HarvardSmart Define 2015, nutty thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/nutty/thesaurus/synonyms>.
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