Synonyms|44Antonyms|0|Broader|0Narrower|0Related|21
4
weirdo
3
idiot
3
nut
2
crackpot
2
crank
2
ding-a-ling
2
kook
2
madman
2
maniac
2
screwball
1
aliene
1
bedlamite
1
borderline case
1
cuckoo
1
dement
1
demoniac
1
energumen
1
fanatic
1
flake
1
fou
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APASmart Define. (2015). crackbrain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/crackbrain/thesaurus/synonyms
ChicagoSmart Define. 2015. "crackbrain thesaurus" https://smartdefine.org/crackbrain/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, crackbrain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/crackbrain/thesaurus/synonyms>.
MLASmart Define. "crackbrain thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/crackbrain/thesaurus/synonyms>