What does LMK stand for online and in messages?

Let me know

When you want someone to reply to a message, email, online post, etc., send them "LMK," which stands for "let me know." You can also use it to mean "letting me know," as in "Thx 4 lmk."

LMK works as a single statement or part of a sentence. For example, if you need to know a headcount for reservations, you might text your friend, "LMK!" if you've already asked them four times previously. Or, you might post on Twitter, "Does anyone have good show recommendations to binge-watch? LMK!"

LMK is one of many options for prompting a reply from the recipient. Other common choices include LMKWYT, WB, lemeno, and TMB.


I'm free next Saturday, so lmk what you're doing
I'm busy until 5 but can hang after that. Cool?

Please LMK!

Related Slang


Updated March 15, 2023

LMK definition by Slang.net

This page explains what the acronym "LMK" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.

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