Same as "savage," but for the more sophisticated crowd: bad-ass, cool.

Uncivilized or unsophisticated when compared to highly developed civilizations

very brutal, dangerous, showing no mercy

You are barbaric!

The condition of having no civilizing influences or refined culture; ignorance or crudity; savage violence or cruelty.

1. Primitive in culture and customs; uncivilized.
2. Lacking refinement or culture; coarse.
3. Characterized by savagery; very cruel or brutal.

The word that Hermoine says in Harry Potter.
Means uncivilised, inferior