LMK
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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LMK means let me know. It is an acronym that can be used as a single statement or at the beginning of a sentence. LMK may also be translated, "letting me know," as in "Thx 4 lmk."