Dup 

What's up, Similar to Sup (whats up) people say whaDUP.

A way to open up a conversation with swag.

Yo, dup? Haven't seen you in a while.

Dup by Things R Heeten Up February 4, 2013

dup 

someone who is an idiot or doing something idiotic or even looking like an idiot

synonyms for the word "dup" : dumb, stupid

can also mean when someone has a delayed reaction to something

"why you being a dup"

"don't drink too much or else you'll start looking like a dup"

dup by mysterygirl31 February 23, 2020

Dup 

A cooler way of saying "whaddup"

Hey, man...dup? *head nod*

Dup by Trapbabe123 July 11, 2017

dup 

Derivation from the word whadup, as in what's up/wassup. Quite handy when chattin.

A: "Ajo Ramooo"
B: "Dup"
etc...

dup by Amino June 7, 2004

dup 

Australian slang for the Downwards Uber Punch. Shortened to DUP, or dup, it is a type of punch achieved by balling up your fist and swinging your arm downwards onto a victims head or body part, keeping your elbow bent and snapping your wrist down as your fist connects with flesh.

I'm ganna dup the cunt in the balls!

dup by bionicvagina October 29, 2010

DUP 

Democratic Unionist Party.
Beguiled bunch of no good squatters, whom if it were not for the sympathy of England, they would be getting their arses kicked every day.

After leaving the DUP meeting, I feel more narrow minded and ignorant than ever before.

DUP by the gay prod March 17, 2007

DUP 

Encompasses all that matters in the world. A social group that is the epitomy of what everyone else would like to be.

Yeah DUP! It's a DUP thing.

DUP by Co-Founder March 17, 2004