kooky

[koo-kee] /ˈku ki/

adjective, kookier, kookiest. Slang.

of, like, or pertaining to a kook; eccentric, strange, or foolish.

Also, kookie.

Origin

1955-60; kook + -y¹

British Dictionary definitions for kookie

/ˈkuːkɪ/

adjective kookier, kookiest

(informal) crazy, eccentric, or foolish

Word Origin and History for kookie

adj.

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.

Slang definitions & phrases for kookie

adjective

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