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kook

[ kook ]
/ kuk /
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noun Slang.
an eccentric, strange, or foolish person.
an insane person.
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Origin of kook

First recorded in 1955–60; perhaps alteration of cuckoo
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use kook in a sentence

British Dictionary definitions for kook

kook
/ (kuːk) /

noun
US and Canadian informal an eccentric, crazy, or foolish person

Word Origin for kook

C20: probably from cuckoo
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
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