loony

1

or loon·ey

[ loo-nee ]
/ ˈlu ni /
Informal.
See synonyms for: loony / loonies on Thesaurus.com

adjective, loon·i·er, loon·i·est.

lunatic; insane.
extremely or senselessly foolish.

noun, plural loon·ies.

a lunatic.

QUIZZES

LEARN THE SPANISH WORDS FOR THESE COMMON ANIMALS!

Are you learning Spanish? Or do you just have an interest in foreign languages? Either way, this quiz on Spanish words for animals is for you.
Question 1 of 13
How do you say “cat” 🐈 in Spanish?
Sometimes lun·y .

Origin of loony

1
First recorded in 1860–65; lun(atic) + -y2

OTHER WORDS FROM loony

loon·i·ness, noun

Definition for loony (2 of 2)

loony2
[ loo-nee ]
/ ˈlu ni /

noun, plural loon·ies.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for loony

British Dictionary definitions for loony

loony

looney or luny

slang

adjective loonier, looniest, lunier or luniest

lunatic; insane
foolish or ridiculous

noun plural loonies, looneys or lunies

a foolish or insane person

Derived forms of loony

looniness or luniness, noun
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