Barbarian

1. A non-Greek or a non-Roman.
2. An uncivilized or uncultured person, originally compared to the hellenistic Greco-Roman civilisation; often associated with fighting or other such shows of strength.
3. Someone from a developing country or backward culture.
4. A warrior, clad in fur or leather, associated with sword and sorcery stories.
5. A person destitute of culture; a Philistine.
6. A cruel, savage, brutal person; one without pity or humanity.
7. A foreigner, especially with barbaric qualities as in the above definitions.

adjective

Relating to people, countries or customs perceived as uncivilized or inferior.