To duplicate an item in an online game and ruin the virtual economy while bringing virtual personal gain.
by DLG June 30, 2003

to have more than 1, duplication
by Steve December 29, 2002

by SerBSPeeD September 29, 2005

tricking people in order to get back at them for breaking up with you in completely ridiculous ways--i.e. via text, in front of a bff 4 minutes before school starts, etc.
by Kristal Conrad March 30, 2009

Person A: What are you doing tonight?
Person B: I think I'm just gonna chill in my room
10 minutes later...
Person A: he's not in his room and his scooter is gone! We've been duped!
Person B: I think I'm just gonna chill in my room
10 minutes later...
Person A: he's not in his room and his scooter is gone! We've been duped!
by thedupemaster June 8, 2017
