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1.
I need to take a big dupey.
by bob October 26, 2003
 
2.
A person who has been psychologically and emotionally conned and abused by a psychopath; as in duped.
Had one put over on you; has had your kindnesses used against you as weakness; have had threats upon your life and vile things done to you (to name but a few) all in the name of love. She was in a dupey state after being so masterfully manipulated.
by WHitty1 January 11, 2012
 
3.
To be or look tired and run down. Can also mean to feel unmotivated or lazy.
I was really dupey on Sunday. I didn't even bother getting out a bed.

Those flowers look really dupey.
by symak February 19, 2011