bananas

American

[buh-nan-uhz] / bəˈnæn əz /

adjective

Slang.

crazy; deranged.

All that chatter is driving me bananas.
wildly enthusiastic.

The crowd went bananas when the music began.

bananas British

/ bəˈnɑːnəz /

adjective

slang crazy (esp in the phrase go bananas )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of bananas

1965–70, see banana, -s ³

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Tesco has also arranged to send bananas out to Orkney's outer isles.

From BBC • Mar. 30, 2026

He said he and his wife Antoinette had worked their land for decades to grow manioc and bananas on steep fields that had taken a toll on his wife's back.

From Barron's • Mar. 14, 2026

“All the volatility curves kind of inform each other. It’s hard for bond volatility to go bananas and not bleed into equity volatility.”

From MarketWatch • Mar. 3, 2026

Hammered over affordability, he carved out exemptions for coffee, bananas and other products.

From The Wall Street Journal • Feb. 21, 2026

“I’ve got some bananas, some strawberries. What would the kid like?”

From "I Can Make This Promise" by Christine Day

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023