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, banana, -s ³