let someone know

idiom

Definition of let someone know

: to tell something to someone Let me know if you're going to the party. Please let me know if there's anything I can do to help.

Learn More about let someone know

Statistics for let someone know

Cite this Entry

“Let someone know.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/let%20someone%20know. Accessed 12 December 2019.

Comments on let someone know

What made you want to look up let someone know? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a period of high artistic development

Get Word of the Day daily email!

Test Your Vocabulary

Semantic Drift Quiz

  • a twisty river
  • Which of the following was once a synonym for fun?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!