Definition of uber- combining form from the Oxford Advanced American Dictionary

 

uber-

 combining form
(also über-)combining form
NAmE//ˈubər//
 
(from German)(informal)
 
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(in nouns and adjectives) of the greatest or best kind; to a very large degree His girlfriend was a real uber-babe, with long blonde hair and a big smile. Many parents believe in giving their children every opportunity to better themselves, to excel, to become uberkids. The movie stars the uber-cool Jean Reno. a world of uber-consumption
See the Oxford Advanced Learner's Dictionary entry: uber-