To be lied or tricked.
"I totally thought I was being dupped when my teacher pulled out a pop-quiz!"
by Mimi April 22, 2005
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to get punked
"oh shiet yo he got dupped"
by kj October 28, 2003
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To violently upper cut a vagina.
I walked into a room at a house party in college, and saw a guy violently upper cutting this chicks vagina. She loved the dupping she got.
by Craigggy February 4, 2019
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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.
by Things R Heeten Up February 5, 2013
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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"
by mysterygirl31 February 24, 2020
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A cooler way of saying "whaddup"
Hey, man...dup? *head nod*
by Trapbabe123 July 11, 2017
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Derivation from the word whadup, as in what's up/wassup. Quite handy when chattin.
A: "Ajo Ramooo"
B: "Dup"
etc...
by Amino June 7, 2004
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