7
not all there(expression, adjective, idiom, crazy, unstable)
7
off one's rocker(expression, adjective, idiom, sane)
7
psycho(silly, foolish, crazy, mad, insane)
7
round the bend(expression, adjective, idiom, silly, foolish)
7
soft(adjective, stupid)
7
unsound(adjective, silly, foolish, stupid, crazy)
6
bananas(adjective, slang, sane)
6
brainsick(adjective, wrong, crazy, confused, insane)
6
dumb(adjective, simple, slow, silly, foolish)
6
flaky(adjective, informal, wild, silly, foolish)
6
haywire
6
imbecile(adjective, foolish, stupid, crazy, insane)
6
kookie
6
laughable
6
lightweight
6
maniacal(adjective, silly, foolish, stupid, crazy)
6
out to lunch(expression, adjective, idiom, silly, mad)
6
preposterous(adjective, weak, simple, wild, silly)
5
around the bend(expression, adjective, idiom, wrong, confused)
5
bughouse
11 years ago|26k views|share |citing 
APASmart Define. (2015). daft thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/daft/thesaurus/synonyms
ChicagoSmart Define. 2015. "daft thesaurus" https://smartdefine.org/daft/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, daft thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/daft/thesaurus/synonyms>.
MLASmart Define. "daft thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/daft/thesaurus/synonyms>