noun
archenemy
ahch-EHN-uh-mee
noun
1
Someone's main or most powerful enemy.
"Every superhero seems to have one archenemy who keeps coming back."
How to Use Archenemy
Learner’s notesIn plain EnglishA person's biggest, most persistent enemy or rival.
Common pairings
sworn archenemy
his archenemy
Word Forms
archenemies plural
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Every superhero seems to have one _____ who keeps coming back.
Etymology
From "arch-", meaning "chief" or "most extreme", plus "enemy".