let someone know
idiom
: 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.
Examples of let someone know in a Sentence
Recent Examples on the Web
The department urged anyone going to visit the monolith to be mindful of the weather, let someone know about their hiking plans and to stay hydrated.
—
Doha Madani, NBC News, 18 June 2024
For your security and for peace of mind for the folks at home, let someone know your itinerary.
—Patricia Doherty, Travel + Leisure, 24 Dec. 2023
With that in mind, these edible gifts will be a beautiful way to let someone know they are loved this Valentine’s Day.
—Aly Walansky, Forbes, 18 Jan. 2022
Sending a card is one of the best ways to let someone know they’re appreciated.
—Laura Daily and Bryan K. Chavez, The Know, 1 May 2020
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Doha Madani, NBC News, 18 June 2024
For your security and for peace of mind for the folks at home, let someone know your itinerary.
—Patricia Doherty, Travel + Leisure, 24 Dec. 2023
With that in mind, these edible gifts will be a beautiful way to let someone know they are loved this Valentine’s Day.
—Aly Walansky, Forbes, 18 Jan. 2022
Sending a card is one of the best ways to let someone know they’re appreciated.
—Laura Daily and Bryan K. Chavez, The Know, 1 May 2020
Cite this Entry
“Let someone know.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/let%20someone%20know. Accessed 11 Jul. 2025.
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