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An initialism of "too long; didn't read," used in online communications to indicate that one did not read an online article, post, comment, etc., because it was deemed too long or boring. Sometimes used as a modifier to describe such pieces of writing. Sometimes written "TLDR"; often spelled in lowercase letters. I really want to write "TL;DR" on all these novella-length rants my friend keeps posting on Spacebook. OK, I know that was a huge explanation. The tldr version is that I got burnt out, and I need to take some time away from making ViewTube videos.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.