LMK
Sayel-em-KAY/ɛlˌɛmˈkeɪ/
- 1Initialism of let me know.
LMK whether you're still planning to come to the party tonight.
I'll be free after three, so just LMK what time works for you.
Note
A whole imperative clause shrunk to three letters, and it still behaves like one: LMK takes whatever would follow know, whether an if or whether clause or a question word (LMK what time works). The let inside is the "allow" verb with a bare infinitive, not the let of let's go, so it literally asks the reader to allow you to know. It belongs to texting and online chat, so write the full phrase in formal messages.
Use it in a sentence
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