“LMK” means “let me know.” People use it in text messages, chats, and online conversations when they want someone to give them an update, answer later, or share information.
It is a quick, casual way to ask for a response. For example, someone might say, “LMK when you get home,” or “LMK if you’re free tomorrow.”
Meaning & Usage
LMK is common in everyday texting because it is short and easy to type. It sounds friendly and informal, so people often use it with friends, family, or coworkers in casual messages.
Examples
“LMK what time works for you.”
“LMK if you need help.”
“LMK when you’ve made a decision.”
Is LMK formal?
No, LMK is informal. It is best for casual messages, not formal writing or professional documents.
Can LMK be used in emails?
Yes, but only in relaxed or friendly emails. In formal emails, it is better to write “please let me know.”
What does LMK stand for?
LMK stands for “let me know.”
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