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2.
Either the combination of ignorance and arrogance or a shorter term ignorance/arrogance
*Hear something ignorant or arrogant*
Guy: THE GANCE IS KILLING ME!
by PJBoe March 24, 2011
 
1.
a slang word for arrogance. often used when the arrogant person is being sarcastic.
person 1: "i am the best rugby 08 player in the world."

person 2: "bro, that is so gance."
by prebbleman January 17, 2009