The Collaborative International Dictionary of English v.0.48:

Loutish \Lout"ish\, a.
   Clownish; rude; awkward. "Loutish clown." --Sir P. Sidney. --
   Lout"ish*ly, adv. -- Lout"ish*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

loutish
    adj 1: ill-mannered and coarse and contemptible in behavior or
           appearance; "was boorish and insensitive"; "the loutish
           manners of a bully"; "her stupid oafish husband";
           "aristocratic contempt for the swinish multitude" [syn:
           boorish, loutish, neanderthal, neandertal,
           oafish, swinish]

Moby Thesaurus II by Grady Ward, 1.0:

94 Moby Thesaurus words for "loutish":
   all thumbs, awkward, blunderheaded, blundering, boorish, bumbling,
   bungling, butterfingered, caddish, callow, careless, carlish,
   churlish, cloddish, clodhopping, clownish, clumsy, clumsy-fisted,
   coarse, countrified, country-born, country-bred, crude, cumbersome,
   farmerish, fingers all thumbs, from the sticks, fumbling, gauche,
   gawkish, gawky, graceless, ham-fisted, ham-handed, hayseed,
   heavy-handed, hick, hicky, hobnailed, hooliganish, hulking, hulky,
   ill-bred, inconsiderate, inelegant, inept, insensitive, inurbane,
   left-hand, left-handed, loobyish, louty, lowbred, lubberly,
   lumbering, lumpen, lumpish, maladroit, nasty, oafish, offensive,
   ponderous, raffish, raw, rough, roughneck, rowdy, rowdyish, rube,
   ruffianly, rusty, sloppy, stiff, tactless, uncivilized, uncouth,
   uncultivated, uncultured, unfeminine, ungainly, ungenteel,
   ungentle, ungentlemanly, ungraceful, unhandy, unladylike,
   unpolished, unrefined, unsolicitous, unwieldy, up-country, vulgar,
   yokel, yokelish