I. loon ‧ y 1 /ˈluːni/ BrE AmE noun ( plural loonies ) [countable]
[ Date: 1800-1900 ; Origin: lunatic ]
informal someone who is crazy or strange:
Her brother’s a complete loony.
II. loony 2 BrE AmE adjective
informal silly, crazy, or strange:
a loony idea
• • •
THESAURUS
▪ crazy very strange or not sensible – used about people, ideas, and behaviour:
People think I’m crazy when I start talking about ghosts.
|
It was a crazy thing to do.
▪ mad British English crazy:
Are you mad?
|
Whose mad idea was that?
|
At first, everyone thought he was completely mad.
▪ nuts informal ( also bonkers British English ) [not before noun] crazy:
The whole thing sounds completely nuts.
|
Have you gone bonkers?
▪ loony informal crazy:
another loony suggestion
|
The man is totally loony.
▪ insane completely crazy:
I know it sounds insane, but it’s true.
⇨ ↑ mentally ill