30
eccentric(noun, adjective, characteristic, person, character)
30
screwy(adjective, feature, characteristic, light, character)
29
batty(adjective, characteristic, light, slang, wild)
29
irrational(adjective, characteristic, weak, simple, unusual)
28
psychotic(noun, adjective, person, foolish, stupid)
28
stupid(adjective, characteristic, weak, simple, wrong)
27
crazed(adjective, state, upset, characteristic, wild)
27
deranged(adjective, state, characteristic, wild, enthusiastic)
27
delirious(adjective, characteristic, wrong, happy, wild)
27
goofy(adjective, characteristic, light, informal, silly)
27
kook(noun, person, slang, informal, wise)
26
dotty(adjective, weak, simple, strange, silly)
26
balmy(adjective, characteristic, knowledge, slang, ability)
26
berserk(adjective, characteristic, passionate, wild, enthusiastic)
26
fatuous(adjective, characteristic, weak, simple, wild)
25
dippy(adjective, characteristic, light, knowledge, slang)
25
odd(adjective, characteristic, person, unusual, wild)
24
outrageous(adjective, characteristic, rough, informal, offensive)
24
barmy(adjective, characteristic, strange, mad, odd)
24
exceedingly(adverb, degree, accentuation, emphasizing)
10 years ago|50k views|share |citing 
APASmart Define. (2016). crazy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/crazy/thesaurus/synonyms
ChicagoSmart Define. 2016. "crazy thesaurus" https://smartdefine.org/crazy/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, crazy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/crazy/thesaurus/synonyms>.
MLASmart Define. "crazy thesaurus" 3 April 2016. Web. 21 September 2026. <https://smartdefine.org/crazy/thesaurus/synonyms>