Meaning of the word loopy in English

What does loopy mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

loopy

US /ˈluː.pi/
UK /ˈluː.pi/

Adjective

crazy or silly

Example:
He's been acting a bit loopy ever since he hit his head.
That idea sounds completely loopy to me.