Green’s Dictionary of Slang

1. odd, eccentric (often with overtones of charm).

c.1951		N. Algren ‘Watch Out for Daddy’ in Entrapment (2009) 145: ‘Brideswell! Brideswell!’ some kukified broad was hollering, ‘have consideration!’.
1959		‘Paul Merchant’ ‘Sex Gang’ in Pulling a Train’ (2012) [ebook] No sense walking the turf when there was a kooky broad who wanted to run him down.
1961		R. Serling ‘The Big, Tall Wish’ in More Stories from the Twilight Zone 89: Crazy, crazy, kookie kid.
1962		P. Highsmith Cry of the Owl (1968) 115: He gave me his phone number the night we went to that kookie dance.
1964		E. Wilson Earl Wilson’s N.Y. 149: Youthful-looking kooky girls lurch through the streets.
1969		‘Iceberg Slim’ Pimp 116: I was sure mad at the kooky bastard.
1974		(con. late 1940s) E. Thompson Tattoo (1977) 489: The glasses made her look young and kooky.
1986		S. King It (1987) 106: But it sure was the kookiest desk he had ever seen.
1998		P. Cornwell Point of Origin (1999) 57: ‘You’re getting kooky on me,’ I said as I imagined wolves and campfires in the night.
1998		R.G. Barrett Goodoo Goodoo 229: Didn’t that kooky sheila in Cairns saying something about ‘the writing’s on the wall’.
1999		Guardian Rev. 25 June 16: Kooky though she appears to others, her mum is simply her mum.
2005		L. Theroux Call of the Weird (2006) 169: The last speaker was possibly the kookiest of the bunch.
2005		E. Weiner Big Boat to Bye-Bye 27: Its three kooky theaters framing that splashing wedding-cake fountain.
2021		J. Ellroy Widespread Panic 225: She explained my kooky conundrum.

2. infatuated with.

1961

F. Kohner Gidget Goes Hawaiian 49: I could understand why the female contingent from the Mainland went kookie over him.