All Mouth And No Trousers

What does the idiom “All Mouth And No Trousers” mean?

Definition:

Superficial, engaging in empty, boastful talk, but not of real substance.

For example:

“He’s all mouth and no trousers. If we put up a united front against him, he’ll crumble.”

Notes:

This is British. American English “all hat and no cattle” is similar.

Reply