LYK
LYK definition by Slang.net
This page explains what the acronym "LYK" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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LYK is an acronym that stands for "let you know," which is a variation of ILYK and LMK. It is typically used in text messages and online.
The acronym is used to communicate to someone that you will tell them something at a future time. You most likely cannot tell them at that moment because you don't know or you just don't want to tell them right now.