Lose your rag

Pro Tip 1/3

Indicates a sudden, intense burst of anger, often used when someone cannot control their feelings anymore.

He was calm until the argument got personal, then he lost his rag.

Pro Tip 2/3

Primarily used in casual conversation, not in formal writing or professional environments.

She's usually professional, but she lost her rag when the meeting ran over time.

Pro Tip 3/3

Recognize that it's a British phrase, may not be understood or used by English speakers from other regions.

After living in London for a year, I've noticed people often say 'lose your rag' instead of 'get angry'.