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.

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“Let someone know.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/let%20someone%20know. Accessed 6 Mar. 2021.

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