Uncivilized, a.
1. Not civilized; not reclaimed from savage life; rude; barbarous; savage; as, the uncivilized inhabitants of Central Africa.
2. Not civil; coarse; clownish. [R.] Addison.
Shades of meaning
Fernald has no entry of its own for uncivilized; he lists it under barbarous.
He lists it without comment; the entries above explain its neighbors.