Texting slang
What does LMK mean?
LMK means "let me know." The person is asking you to reply with an answer or an update when you can.
LMK stands for “let me know”
LMK is short for "let me know." It usually ends a question or a plan, so the person is waiting on you for something.
It is not urgent unless they say so. "LMK by Friday" gives you a deadline. Plain "lmk" means whenever you know.
Examples in a text
- Want to come for dinner Sunday? LMKYes please! What can I bring?
- lmk when you landLanded safe!
How to reply
- Send the answer or update they asked about.
- If you are not sure yet, say so: "I'll let you know tomorrow."
Polite and practical. One of the most common text abbreviations.
Related terms
Looking up a different abbreviation? See the full texting slang list. If your texts are not sending at all, try why texts are not sending on Android.