DU has 2 meanings
1. What does DU stand for?

Don't understand

If you don't understand something, you can send "DU," which stands for "don't understand." For example, if your friend texts you an incoherent message, you can reply, "DU. WDYM?"

You will most likely see DU in messages, such as texts or DMs, online forums, and videos' comments sections. However, you may also see it in the chat section when gaming, where people often use slang or are hard to follow, causing they are typing too fast.

Since there is a lot of confusion online, netizens have created many acronyms and abbreviations to communicate confusion. Besides DU, other examples include IDK, wut, uncrtn, and WDUMBT.


Just send me the memory dump after you get the blue screen of death next time

That DU face

Related Slang


Updated July 25, 2022
2. What does DU stand for?

Darn you


DU stands for "Darn you," which is a way of expressing frustration towards someone. It is often used online and in text messages.

The DU acronym is similar to the more common FU but is less vulgar and harsh. You can think of it as the PG-13 version of the R-rated FU acronym.

It is most often used by teenagers and young adults with their friends to complain about them in a playful manner. Common DU uses include jealousy about a person's good fortune due to talent, good looks, or dumb luck.


DU - I can't believe you only studied one night and still got a better score than me on the test

When you are darning someone

Related Slang


Updated December 9, 2020

DU definition by Slang.net

This page explains what the acronym "DU" means. The various definitions, examples, and related terms listed above have been written and compiled by the Slang.net team.

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