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1.
Over or Above the standard level of Cunt!
Nerd: Im going to RAPE that hot chick today!

Awesome Guy: OMG that guy is a UBER CUNT!
by Hoppy Is Sexy! August 20, 2008
 
2.
Based on the Übermensch or its rough translation to superman from the writings of Friedrich Nietzsche, the Ubercunt is a super cunt. The Ubercunt is a woman who has become so incredibly bitchy, mean spirited and evil that she's evolved beyond a mere cunt.
Your friend Laura is such an Übercunt no man will ever put up with her.
by BigDaddy1968 September 18, 2013