adjective loo·ny \ˈlü-nē\

: crazy or foolish


Full Definition of LOONY

:  crazy, foolish
loo·ni·ness noun
loony noun

Variants of LOONY

loo·ny also loo·ney \ˈlü-nē\

Examples of LOONY

  1. Every family includes someone who's a little loony.
  2. <that's got to be the looniest idea I've ever heard>

Origin of LOONY

by shortening & alteration from lunatic
First Known Use: 1872


Next Word in the Dictionary: loony binPrevious Word in the Dictionary: loonieAll Words Near: loony
July 29, 2015
indomitable Hear it
incapable of being subdued or conquered
Take a 3-minute break and test your skills!
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