Urban Dictionary: arch-nemesis

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2.	arch-nemesis
	buy arch-nemesis mugs, tshirts and magnets A person with the same name as you, who is in an environment where out-doing eachother becomes necessary. "Shit! My arch-nemesis (the other Diego) beat me in our last maths test." "That other Diego is alwayz competing for promotions against me at work." "I hate this new Diego that has started hanging out with us, everyone thinks he's so cool." by Diego Sep 5, 2003 share this
1.	arch-nemesis
	buy arch-nemesis mugs, tshirts and magnets Arch nemesis are friends from a long time ago that have more or less equivalent powers, but also have oposing ideologies. They are therefore always fighting with each other. Examples: - Obi Wan and Darth Vader - The Republican and Democratic Parties Professor Xavier and Magneto are eachother's arch-nemesis. They play chess together and have been friends for a long time, but they completely disagree about the relationship that mutants should have with humans, so they are always fighting. super hero mortal enemy fight friends disagree by David Aaron Smith May 20, 2007 share this