Idioms

weak at the knees

This page is about the idiom weak at the knees

Meaning

If you go weak at the knees, you feel an emotion so strongly that it makes you feel unstable on your feet.

For example

  • When he looked at me and smiled, I felt weak at the knees. He was the most beautiful man I'd ever seen!

  • Just thinking about getting up in front of a thousand people makes me weak at the knees. It's terrifying!

Quick Quiz

Carlos gasped and went weak at the knees when he realised he had

a. put a little bit too much sugar in his tea

b. forgotten to tie one of his shoelaces

c. lost his passport, money and credit cards
a) put a little bit too much sugar in his tea b) forgotten to tie one of his shoelaces c) lost his passport, money and credit cards

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Common English Idioms

Contributor: Matt Errey