dur Share definition Flag 1)A replacement of "no shit" or "duh" 2)An expression showing that something someone said is obvious Liz: Katy definitly likes Brad. Jamie: Well, dur! She sent him 3 love letters! Jackie: What's the capital of Wyoming? Doug: Jackie, we just learned that in class today. You can figure it out. Jackie: Uhm...Cheyenne? Doug: Dur. dur by Kate June 22, 2004 Get the dur mug.