Texting Abbreviations

What Does "LMK" Mean?

Quick Definition
"Let Me Know" — asking someone to inform you or follow up.
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What "LMK" Really Means

"LMK" stands for "Let Me Know" and is used to ask someone to follow up with information or a decision. It's one of the most functional and practical text abbreviations — used in planning, invitations, and casual requests. "LMK if you're coming" means "tell me whether you plan to attend." It remains one of the most universally used texting abbreviations across all demographics.

Origin & History

SMS and texting culture; widespread from early 2000s.

Tone & Context

This slang is generally considered neutral in tone. Universal. One of the most practically useful texting abbreviations.

Example Sentences

  • "LMK if you can make it to the party."
  • "Still deciding — I'll LMK by tonight."
  • "LMK what you think of the proposal."
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Related Slang

What does "HMU" mean? What does "WYD" mean? What does "WBU" mean? What does "TTYL" mean?

Explore More Texting Abbreviations

Browse our full Texting Abbreviations dictionary for more terms, or check the complete slang glossary.