Boeotian, asinine, beef-brained, beef-witted, blockish, boorish, bovine, carlish, chumpish, churlish, clodhopping, clownish, countrified, country-born, country-bred, cowish, crass, dense, doltish, dullard, dumb, duncical, duncish, farmerish, fat, from the sticks, gross, hayseed, hick, hicky, hobnailed, hooliganish, ill-bred, ineducable, inurbane, klutzy, loobyish, loutish, lubberly, lumpen, lumpish, oafish, opaque, raffish, roughneck, rowdy, rowdyish, rube, ruffianly, sottish, stupid, thick, uncivilized, uncouth, uncultivated, uncultured, unpolished, unrefined, unteachable, up-country, wrongheaded, yokel, yokelish

For further exploring for "cloddish" in Webster Dictionary Online

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