A doppelganger of the opposite sex. A person who is like you in every way except for gender. Your "other half", as some might say.

From "opposite sex" plus "Doppelganger."
by Urine Corporation September 3, 2014
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Your nemesis gang or a opposing gang.
dam, da oppogangs be shootin day gats at us.
by Hayden Goetz June 25, 2005
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