barbarian

1. not comparableRelating to people, countries, or customs perceived as uncivilized or inferior.

   Synonyms: barbaric, barbarious, barbarous, animalistic, barbaric, barbarious, barbarous, brutal

plural barbarians

1. historicalA non-Greek or a non-Roman citizen.
2. An uncivilized or uncultured person, originally compared to the hellenistic Greco-Roman civilisation; usually associated with senseless violence and self-harm or other such shows of brute force and lack of mental faculty.
3. derogatoryA person destitute of culture; a Philistine.

   Shall a noble writer, and an inspired noble writer, be called a solecist, and barbarian, for giving a new turn to a word so agreeable to the analogy and genius of the Greek tongue?

   1725, Anthony Blackwall, The Sacred Classics Defended And Illustrated

4. derogatorySomeone from a developing country or backward culture.
5. A brutish warrior depicted in sword and sorcery and other fantasy works; typically clad in primitive furs or leather and usually favoring physical strength over intelligence while often possessing a bellicose temperament and disdain for laws.
6. derogatoryA cruel, savage, inhumane, brutal, violently aggressive person, particularly one who is unintelligent or dim-witted; one without pity or empathy.

   Thou fell barbarian.

   1712, Ambrose Philips, The Distrest Mother

7. derogatoryA foreigner, especially with barbaric qualities as in the above definitions.

   Synonyms: alien