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1.
A person who is levels of magnitude above an uptard.
What you would scream at someone who sits at a green light until it turns red. "Pull out you fucking ubertard!"
by natedog August 30, 2004
 
2.
A very arrogant and "dumb" person ; The superlative form of "Retard"
That guy over there is such an ubertard.
by MattieWill May 16, 2009
 
3.
a person or comment that is beyond outrageous and stupid. Idiotic or ridiculous at a level surpassing anything else.

Differs from retarded as it is not a medical condition, but instead is just an idiotic, childish or other wise stupid comment or action by someone of otherwise "average" intelligence
Yea, that was ubertarded
by DuckJ13 July 15, 2010