slang Somewhat crazy, weird, or eccentric. My family always thought I was a bit kookish because of my unconventional lifestyle. A: "What's the deal with the kookish old lady who lives at the end of 16th Street?" B: "Who, the Widow Crawford? She's harmless, just a recluse who's gone a bit senile."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
mod. strange; eccentric. Who is the kookish one over there with the purple shades?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.