Go bananas
verb
To react with extreme enthusiasm or excitement, to go crazy.
The audience will go bananas when the band comes on stage.

Often appears as...
- go bananas over something
- go bananas for something
Usage tips
Informal
Colloquial
verb
To lose control or become very angry.
He will go bananas if he sees this mess.

Often appears as...
- go bananas about something
- make someone go bananas
Usage tips
Informal
Colloquial
verb
To react with extreme enthusiasm or excitement, to go crazy.
The audience will go bananas when the band comes on stage.

Often appears as...
- go bananas over something
- go bananas for something
Usage tips
Informal
Colloquial
verb
To lose control or become very angry.
He will go bananas if he sees this mess.

Often appears as...
- go bananas about something
- make someone go bananas
Usage tips
Informal
Colloquial
Definition 1 of 2

Extreme Excitement
Use 'go bananas' when someone is showing very high levels of excitement, often unexpectedly.

When she won the lottery, she went bananas.
Informal Speech
'Go bananas' is used in casual conversation, not in formal settings.

I told my friends I got the job, and they all went bananas.
Positive Context
It often has a positive connotation, like when describing joy at a party or event.

The fans went bananas when their team scored the winning goal.
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