1
arrested
1
babbling
1
backward
1
bananas(crazy, hysterical, hacked, lunatic, psychotic)
1
bats
1
bemused(crazy, hysterical, psychotic)
1
blithering
1
bughouse
1
certifiable
1
crackers
1
crackpot
1
cuckoo
1
disoriented
1
distracted(crazy, hysterical, psychotic)
1
flighty
1
fruity
1
half-baked
1
haywire
1
hysterical(crazy, psychotic)
1
in the ozone(expression, crazy, hysterical, hacked, lunatic)
11 years ago|5.1k views|share |citing 
APASmart Define. (2015). crackbrained thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/crackbrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "crackbrained thesaurus" https://smartdefine.org/crackbrained/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, crackbrained thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/crackbrained/thesaurus/synonyms>.
MLASmart Define. "crackbrained thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/crackbrained/thesaurus/synonyms>