possible profanity
21
crazy(noun, person, informal, wise, fanatic)
20
lunatic(noun, person, mad, wise, nut)
19
nut(noun, person, character, slang, unusual)
18
crackpot(noun, person, character, crazy, mad)
18
maniac(noun, person, crazy, mad, nut)
17
screwball(noun, person, slang, sick, wise)
16
loony(noun, person, slang, informal, sick)
14
madman(noun, person, madness, insanity, lunatic)
12
oddball(noun, unusual, crazy, original, nut)
12
psychotic(noun, person, mad, madness, insanity)
12
weirdo(noun, person, slang, unusual, crazy)
11
dingbat(noun, person, character, slang, crazy)
11
insane
10
psycho(noun, person, slang, mad, sick)
9
crank(noun, person, informal, crazy, mad)
9
freak(noun, person, unusual, original, nut)
9
psychopath(noun, person, mad, nut, fanatic)
8
bedlamite(noun, person, nut, fanatic, madness)
8
ding-a-ling(noun, slang, wise, nut, lunatic)
8
eccentric(noun, person, character, unusual, crazy)
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APASmart Define. (2015). kook thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/kook/thesaurus/synonyms
ChicagoSmart Define. 2015. "kook thesaurus" https://smartdefine.org/kook/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, kook thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/kook/thesaurus/synonyms>.
MLASmart Define. "kook thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/kook/thesaurus/synonyms>