[1] : WordNet (r) 2.0

roughneck
     n : a cruel and brutal fellow syn: bully, tough, hooligan,
          ruffian, rowdy, yob, yobo, yobbo
see also:
bully tough hooligan ruffian rowdy yob 
yobo yobbo 

[2] : Moby Thesaurus II by Grady Ward, 1.0

67 moby thesaurus words for "roughneck":
   babbitt, philistine, arriviste, boor, boorish, bounder, bourgeois,
   bruiser, bullyboy, cad, carlish, churl, churlish, cloddish, clown,
   clownish, epicier, goon, gorilla, groundling, gun, gunsel,
   guttersnipe, hatchet man, hellion, holy terror, hood, hoodlum,
   hooligan, hooliganish, ill-bred fellow, looby, loobyish, lout,
   loutish, low fellow, lubberly, lumpish, mucker, mug, mugger,
   muscle man, nouveau riche, parvenu, peasant, plug-ugly, punk,
   raffish, ribald, rodman, rough, rowdy, rowdyish, ruffian,
   ruffianly, strong-arm man, terror, torpedo, tough, trigger man,
   ugly customer, upstart, vulgarian, vulgarist, yahoo, yokel,
   yokelish

Roughneck >> R Words
Roughneck, definition of term: Roughneck
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