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1.
1. (n) a dumb person that lacks a physical mental handicap. Their retardation is their own fault
2. (n) a stupid fuckin' retard
"Bush is a fucking dumbtard with no ball sack."
by jared h March 15, 2006
 
3.
used in lieu of dumbfuck or fucktard, should you find yourself in a situation where dropping the F-bomb is a bad idea (i.e. a public place with young children and their aggressively conservative parents around)
I wanted to tell John what a fucktarded asshole he was being in the supermarket, but after noticing the soccer moms' death-glares, i settled for 'dumbtarded a-hole'.
by Scienatrix April 21, 2010