The Collaborative International Dictionary of English v.0.48:

Unrefined \Unrefined\
   See refined.

WordNet (r) 3.0 (2006):

unrefined
    adj 1: not refined or processed; "unrefined ore"; "crude oil"
           [syn: unrefined, unprocessed, crude] [ant:
           processed, refined]
    2: (used of persons and their behavior) not refined; uncouth;
       "how can a refined girl be drawn to such an unrefined man?"
       [ant: refined]

Moby Thesaurus II by Grady Ward, 1.0:

213 Moby Thesaurus words for "unrefined":
   Doric, Gothic, Neanderthal, Philistine, animal, arrested, awkward,
   backward, barbarian, barbaric, barbarous, bestial, bookless,
   boorish, broken, brutal, brutish, bumbling, bumpy, cacophonous,
   caddish, choppy, churlish, cloddish, clodhopping, clownish, clumsy,
   coarse, coarse-grained, corrugated, countrified, country-born,
   country-bred, crass, cross-grained, crude, deceived, discourteous,
   doggerel, dysphemistic, embryonic, farmerish, from the sticks,
   functionally illiterate, gauche, graceless, grained, grainy,
   grammarless, granular, granulated, gritty, gross, harsh, hayseed,
   heathen, hick, hicky, hobnailed, homespun, hoodwinked, horripilant,
   ignoble, ill-bred, ill-educated, ill-mannered, illiterate,
   impolite, improper, impure, in bad taste, in embryo, in ovo,
   in the rough, inconcinnate, inconcinnous, inconsiderate, incorrect,
   indecorous, inelegant, inequal, infelicitous, insensitive,
   inurbane, irregular, jolty, led astray, linsey-woolsey, loutish,
   louty, low, lowbred, lowbrow, lumpen, lumpish, misinformed,
   misinstructed, mistaught, nasty, native, natural, noncivilized,
   nonintellectual, offensive, outlandish, oversimple, pagan, pimply,
   pitted, plebeian, pocky, potholed, primitive, rank, raw,
   reductionistic, reductive, ripply, rough, rough-and-ready,
   rough-cast, rough-grained, rough-hewn, roughcast, roughhewn, rube,
   rude, rudimental, rudimentary, ruffled, run-of-mine, rutted, rutty,
   savage, shagged, shaggy, simplistic, stunted, tactless, tasteless,
   textured, troglodytic, unblown, unbooked, unbookish, unbooklearned,
   unbriefed, uncivil, uncivilized, unclarified, uncombed, uncourtly,
   uncouth, uncultivated, uncultured, uncut, underdeveloped,
   undeveloped, undignified, undressed, unedified, uneducated,
   unerudite, uneuphonious, uneven, unfashioned, unfelicitous,
   unfeminine, unfinished, unformed, ungenteel, ungentle,
   ungentlemanly, ungraceful, ungracious, ungraded, unguided, unhewn,
   uninstructed, unintellectual, unkempt, unlabored, unladylike,
   unlearned, unlettered, unlevel, unlicked, unliterary, unmannerly,
   unpolished, unprocessed, unread, unscholarly, unschooled, unseemly,
   unsmooth, unsolicitous, unsophisticated, unsorted, unstudious,
   untamed, untaught, untreated, untutored, ununiform, unworked,
   unwrought, up-country, vulgar, wild, wimpled, yokel, yokelish