Barbarian
Appearance
The term "barbarian" xenophobically disparages foreigners, those not sharing a recognized culture or degree of polish with the speaker or writer employing the term.
The name derives from the Greek, and expresses with mocking re-duplication ("bar-bar") alleged attempts by outsiders to speak a "real" language.
Historically, the term finds widespread use, for example, in categorizing peoples from outside the Roman Empire.