WordWeb Online

1. Not refined or processed
   "unrefined ore"
   - unprocessed, crude
    
2. (used of persons and their behaviour) not refined; uncouth
   "how can a refined girl be drawn to such an unrefined man?"

See also: agrestic, artless, boorish, bounderish [Brit, archaic], coarse, common, crass, ill-bred, inelegant, loutish, low, lowbred, neandertal, neanderthal, oafish, robust, rough, rough-cut, rough-spoken, rude, swinish, uncouth, uncultivated, uncultured, underbred, unfastidious, ungentlemanlike, ungentlemanly, ungracious, unladylike, unpolished, vulgar, yokelish

Antonym: refined