WordNet sense 1 (not refined or processed):

crude, unprocessed

WordNet sense 2 ((of persons or behavior) lacking refinement or finesse):

rough

WordNet sense 3 ((of persons) lacking in refinement or grace):

rude

WordNet sense 4 ((of persons) so unrefined as to be lacking in discrimination and sensibility):

crass

WordNet sense 5 (lacking refinement or cultivation or taste):

coarse, common, uncouth, vulgar

WordNet sense 6 (ill-mannered and coarse and contemptible in behavior or appearance):

boorish

WordNet sense 7 ((of persons) lacking art or knowledge):

uncultivated, uncultured