noun \ˈkük\

: a person whose ideas or actions are very strange or foolish

Full Definition of KOOK

:  one whose ideas or actions are eccentric, fantastic, or insane :  screwball

Examples of KOOK

  1. a bunch of kooks dressed up in weird costumes
  2. <if you insist on painting your house bright orange, everyone will assume you are a kook>

Origin of KOOK

by shortening & alteration from cuckoo
First Known Use: 1960

Rhymes with KOOK

KOOK Defined for Kids


noun \ˈkük\

Definition of KOOK for Kids

:  a person who acts in a strange or insane way
kooky \ˈkü-kē\ adjective


Next Word in the Dictionary: kookaburraPrevious Word in the Dictionary: koofahAll Words Near: kook
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears