Top Definition
Term for a person of lower intelligence or learning difficulties esp. in Lancaster, England.
"Look at that fella there, he's a right dupper!"
by DrGreyhound July 23, 2008
2 more definitions
The meal in between a dinner and a Supper.
Mom: Hey what would you like for Dupper Jimmy?

Jimmy: Some cracked corn MA.
by Thecrunchynugget January 23, 2010
An extremely ugly, stuip female.
The also legendary Laura Mcloughin
Laura is a dupper
by Chrissy B April 24, 2008

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