Is blow a fuse formal or informal?

It is informal. Use it in conversation, not in formal writing.

How is blow a fuse different from get angry?

It means a sudden, strong anger. It sounds more dramatic than get angry.

Can I use blow a fuse in business English?

Only in informal business conversation. Avoid it in reports or emails.

← Dictionary

blow-a-fuse

/ˌbləʊ ə ˈfjuːz/

IELTSAcademic

idiom

To become suddenly very angry and lose self-control. It is informal and often sounds vivid or dramatic.

Dad blew a fuse when he saw the bill.
She blew a fuse after the rude comment.
Don’t blow a fuse over a small mistake.

Adinary Nuance

Blow a fuse is stronger and more emotional than get angry. It suggests a sudden burst of anger, often with loud words or visible loss of control. It is close to lose your temper, but more vivid and informal.

In other languages

Vietnamese: Nổi khùng
Spanish: Ponerse furioso
Chinese: 大发雷霆
Japanese: 激怒する
Korean: 버럭 화내다

Etymology

This idiom comes from the older idea of an electrical fuse burning out and stopping a circuit. It began appearing in English in the 20th century as a figurative phrase.

Common phrases

blow a fuse over somethingblow a fuse at someonealmost blow a fuse

Synonyms

lose your temper explode flare up

Related words

angry temper irritated outburst

Frequently asked questions

Is blow a fuse formal or informal?: It is informal. Use it in conversation, not in formal writing.
How is blow a fuse different from get angry?: It means a sudden, strong anger. It sounds more dramatic than get angry.
Can I use blow a fuse in business English?: Only in informal business conversation. Avoid it in reports or emails.