Useful English Word or Phrase to Boost Your English: All Mouth and No Trousers

Quick summary: A British phrase meaning someone talks big but does not back it up.

What does it mean?

If someone is all mouth and no trousers, they make bold claims, flirt heavily, or act tough, but they do not actually follow through.

Is it positive or negative?

It is negative and mocking.

When do you use it?

Use it when someone boasts, threatens, or talks in a sexually confident way without any real action behind it.

Examples

Example 1: He kept bragging about how he would sort everything out, but he was all mouth and no trousers.

Example 2: She says she will chat up everyone in the bar, but she is all mouth and no trousers.

Question for you

What kind of behaviour makes someone seem all mouth and no trousers to you?

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