Synonyms|150Antonyms|1|Broader|0Narrower|0Related|0
2
bonkers
2
cracked
2
dippy
2
foolish
2
idiotic
2
mental
2
non compos mentis
2
nonsensical
2
out to lunch
2
potty
2
psychotic(adjective, insane)
2
touched
2
unhinged
2
wacky
1
absurd
1
bananas
1
berserk(adjective, insane)
1
certifiable
1
crazed
1
fatuitous
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APASmart Define. (2013). crack-brained thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/crack-brained/thesaurus/synonyms
ChicagoSmart Define. 2013. "crack-brained thesaurus" https://smartdefine.org/crack-brained/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2013, crack-brained thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/crack-brained/thesaurus/synonyms>.
MLASmart Define. "crack-brained thesaurus" 17 June 2013. Web. 24 September 2026. <https://smartdefine.org/crack-brained/thesaurus/synonyms>