someone's knees are knocking

idiom

Definition of someone's knees are knocking 

informal

used to say that a person's knees are shaking from nervousness or fear Her knees were knocking in terror.

Learn More about someone's knees are knocking

Share someone's knees are knocking

Resources for someone's knees are knocking

Comments on someone's knees are knocking

What made you want to look up someone's knees are knocking? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

lying above or upon

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!