The Collaborative International Dictionary of English v.0.48:

Roughhewn \Rough"hewn`\, a.
   1. Hewn coarsely without smoothing; unfinished; not polished.
      [1913 Webster]

   2. Of coarse manners; rude; uncultivated; rough-grained. "A
      roughhewn seaman." --Bacon.
      [1913 Webster]

WordNet (r) 3.0 (2006):

roughhewn
    adj 1: of stone or timber; shaped roughly without finishing
           [syn: roughhewn, rough-cut]

Moby Thesaurus II by Grady Ward, 1.0:

72 Moby Thesaurus words for "roughhewn":
   arrested, backward, broken, bumpy, choppy, coarse, coarse-grained,
   corrugated, cross-grained, crude, embryonic, grainy, granulated,
   homespun, horripilant, in embryo, in ovo, in the rough, inequal,
   irregular, jolty, linsey-woolsey, oversimple, pimply, pitted,
   pocky, potholed, rank, reductionistic, reductive, ripply, rough,
   rough-cast, rough-grained, rough-hewn, roughcast, rude, rudimental,
   rudimentary, ruffled, rutted, rutty, shagged, shaggy, simplistic,
   stunted, textured, unblown, uncultivated, uncultured, uncut,
   underdeveloped, undeveloped, undressed, uneven, unfashioned,
   unfinished, unformed, unhewn, unkempt, unlabored, unlevel,
   unlicked, unpolished, unprocessed, unrefined, unsmooth, untreated,
   ununiform, unworked, unwrought, wimpled