bananas

[ buh-nan-uhz ]

adjective

, Slang.

1. crazy; deranged:

   All that chatter is driving me bananas.

2. wildly enthusiastic:

   The crowd went bananas when the music began.

bananas

/ bəˈnɑːnəz /

adjective

1. slang.
   crazy (esp in the phrase go bananas )

Word History and Origins

Origin of bananas¹

1965–70, Americanism; banana, -s ³