Public Enemy Number One
or Public Enemy Number 1, Public Enemy No. 1
(not in official use) a criminal at the top of the FBI's list of the ten most wanted criminals.
a major menace to public safety, health, etc.: Cancer is Public Enemy Number One.
Explain The Difference Between Enemy And NemesisWho do you think would win an epic showdown like this one? We often see these words used interchangeably, but there are some subtle differences between them.
Origin of Public Enemy Number One
An Americanism dating back to 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019