Let-know Definition

verb

(with two objects) To inform (someone) (of something).

I sent an e-mail to let John know what we found.
Let me know when you are arriving .
"I'm not sure which flight I'll be taking." / "Well, as soon as you find out, let me know."
He let her know about his plans.
If anyone has seen him, let us know of his whereabouts.
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