noun. The essence possessed by all arch-nemesises, from Lex Luthor to Sideshow Bob.
Related terms: nemesisness, nemesisless.
Real citation: "since you’ve exchanged now greetings, he can no longer pretend he’s not aware of your arch-nemesisness. i’d proceed with caution if i were you."
(Patricia, March 2, 2005, http://wiw.org/~jess/archives/2005/03/02/fedora-and-cigar/)
Made-up citation: "Commander Cuckoo-Bananas has been so successful because no one in the Democratic party or the press has more arch-nemesisness than a dishrag soaked in milk and tears."