“LMK” means “let me know.” It is a short, casual way to ask someone to tell you something later, update you, or share a decision.
People use “LMK” in texts, chats, and social media when they want a quick, friendly reply. For example, someone might say, “LMK when you’re free,” or “LMK if you can come,” instead of writing the full phrase.
Meaning & Usage
“LMK” is common in informal conversation. It saves time and sounds natural in messages between friends, coworkers, or family.
Examples
LMK when you arrive.
LMK if you need help.
LMK what time works for you.
Is LMK formal?
No. “LMK” is informal and best for casual messages, not formal writing.
Where do people use LMK?
People mostly use it in texts, chats, emails, and social media messages.
What does LMK stand for?
LMK stands for “let me know.”
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