[koo-kee] /ˈku ki/

adjective, kookier, kookiest. Slang.
of, like, or pertaining to a ; eccentric, strange, or foolish.
adjective kookier, kookiest
(informal) crazy, eccentric, or foolish

1959, American English, originally teenager or beatnik slang, possibly a shortening of cuckoo.

Using the newest show-business jargon, Tammy [Grimes] admits, “I look kooky,” meaning cuckoo. [“Life” magazine, Jan. 5, 1959]

Related: Kookily; kookiness.


Crazy; eccentric; dippy, goofy: make you seem a little kookie/ the kooky stunt so pleased him (1950s+ Teenagers)


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