Arch-villain

An archenemy (sometimes spelled arch-enemy) is the principal enemy of someone or something. In fiction, it is a character who is the hero's or protagonist's most prominent and worst enemy.

The word archenemy or arch-enemy originated around the mid-16th century, from the words arch- (from Greek "arkhos" meaning "most important") and enemy.

An archenemy may also be referred to as archfoe, archvillain, or archnemesis.

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