A barbarian is a person or tribe of people that is perceived to be primitive, savage and warlike. Many cultures have referred to other cultures as barbarians, sometimes out of misunderstanding and sometimes out of prejudice.
A "barbarian" may also be an individual reference to a brutal, cruel, warlike, and insensitive person, particularly one who is also dim-witted, while cultures, customs and practices adopted by peoples and countries perceived to be primitive may be referred to as "barbaric".
The term originates from the Ancient Greek: βάρβαρος (barbaros; pl. βάρβαροι barbaroi). In Ancient Greece, the Greeks used the term not only for those who did not speak Greek and follow classical Greek customs, but also for Greek populations on the fringe of the Greek world with peculiar dialects. In Ancient Rome, the Romans adapted and applied the term to tribal non-Romans such as the Germanics, Celts, Iberians, Helvetii, Thracians, Illyrians, and Sarmatians. In the early modern period and sometimes later, the Byzantine Greeks used it for the Turks in a clearly pejorative manner.
The Greek word was borrowed into Arabic as well, under the form بربر (barbar), and used as an exonym by the Arab conquerors to refer to the indigenous peoples of North Africa, known in English as Amazigh or Berbers, with the latter thereby being a cognate of the word "barbarian".
Etymology
The Ancient Greek name βάρβαρος (bárbaros) 'barbarian' was an antonym for πολίτης (politēs) 'citizen', from πόλις (polis) 'city'. The earliest attested form of the word is the Mycenaean Greek 𐀞𐀞𐀫, pa-pa-ro, written in Linear B syllabic script.