the GNU version of the Collaborative International Dictionary of English
adj. Crazy; insane; lunatic; mentally unsound.
adj. Very foolish; very impractical.
n. someone mentally deranged and possibly dangerous.
The Century Dictionary and Cyclopedia
n. See luny.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. someone deranged and possibly dangerous
adj. informal or slang terms for mentally irregular
Word Usage
"Sorry about using the term loony left - I've been spending too much time looking at Labour Home - I think a £7 an hour minimum wage and renewable energy policies are nuts though."