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1.
A vegan who is very extreme with their lifestyles.
Pammy is so uber vegan, she only serves Tofurky for Thanksgiving.
by bigg3469 March 19, 2009
 
2.
a person who on top of not consuming or using animal products does not consume white flour, white rice, white potatoes, and artificial sugar.
as noun- I'm a strict ubervegan

as adjective- A ubervegan diet.
by Arsene November 01, 2009