What is the Meaning of the Phrase ‘Blowing off Steam’?

To blow off steam means to relieve stress by shouting or ranting; to release frustration or anger by engaging in any vigorous activity.

This term comes from the early days of steam engines when they had no safety valve. When the steam pressure built up, the engineer would pull a lever that would blow off steam and prevent an explosion.

This meaning was transferred to human anger in the early nineteenth century.

A synonym of this phrase is ‘let off steam’.

Let’s see an example —

“Whenever I am angry, I go for a 10-kilometer run to blow off steam.’

I go for a 10 km run to relieve my anger.

I hope you found this story interesting. If you did, buy my full course on Udemy or watch it for free on Skillshare by signing up here. This course covers nearly 380 idioms with their origins and backstories.

Hi, I am Gauri Shanker, a Vocab teacher and enthusiast. I teach vocabulary in a fun and engaging way. You can check out my courses here.