[Ezekiel]

Nope, the Romans coined it referring to the jibberish that the Romans heard when the Germanic tribes spoke, “bar, bar, bar, bar.”

Then why weren't they called bierbarians?

[Cronos]

incidently the Polish word for Germans is Niemcy, derived from the word for “mumblers” as to the ancient Polanians it probably sounded like the germans were mumbling.