kooky

or kook·ie

[ koo-kee ]
/ ˈku ki /

adjective, kook·i·er, kook·i·est. Slang.

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

Origin of kooky

First recorded in 1955–60; kook + -y1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for kooky

kooky

kookie

/ (ˈkuːkɪ) /

adjective kookier or kookiest

informal crazy, eccentric, or foolish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012