Voldemort and Harry Potter, e.g. (11)
I believe the answer is:
archenemies
(Another definition for archenemies that I've seen is " Chief antagonists".)
I've seen this clue in the King Feature Syndicate.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.