Synonyms|44Antonyms|0|Broader|0Narrower|0Related|21
1
fruitcake
1
harebrain
1
loon
1
loony
1
lunatic
1
meshuggenah
1
noncompos
1
nutcase
1
phrenetic
1
raving lunatic
0
anomaly
0
character
0
codger
0
dingbat
0
egg
0
lamebrain
0
madcap
0
nutter
0
oddball
0
sickie
11 years ago|390 views|share |citing 
APASmart Define. (2015). crackbrain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/crackbrain/thesaurus/synonyms
ChicagoSmart Define. 2015. "crackbrain thesaurus" https://smartdefine.org/crackbrain/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, crackbrain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/crackbrain/thesaurus/synonyms>.
MLASmart Define. "crackbrain thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/crackbrain/thesaurus/synonyms>