Go off on one

usgb
phrase

To suddenly get very angry or upset.

She just went off on one when I mentioned her last boyfriend.
Visual representation of "go off on one" - To suddenly get very angry or upset

Often appears as...

  • suddenly go off on one
  • go off on one about something

Usage tips

Informal, Disapproving

Colloquial

Definition 1 of 1
Visual representation of "go off on one"
LampPro Tip 1/3

Intensity Warning

Indicates a strong, often sudden emotional response that can seem overwhelming.

Illustration for Intensity Warning
He's calm now, but mention the unfair penalty and he might go off on one.
LampPro Tip 2/3

Colloquial Term

Used in casual conversation, not suitable for formal situations.

Illustration for Colloquial Term
In a professional meeting, avoid saying she 'went off on one'.
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British Slang

Primarily used in the UK, might not be understood or used by English speakers from other regions.

Illustration for British Slang
I was confused when my British friend said his boss 'went off on one'.
Visual representation of the word "Go off on one"

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