blockish

from WordNet (r) 3.0 (2006)

blockish
    adj 1: resembling a block in shape [syn: {blockish}, {blocky}]

from The Collaborative International Dictionary of English v.0.48

Blockish \Block"ish\, a.
   Like a block; deficient in understanding; stupid; dull.
   "Blockish Ajax." --Shak. -- {Block"ish*ly}, adv. --
   {Block"ish*ness}, n.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

31 Moby Thesaurus words for "blockish":
      Boeotian, asinine, beef-brained, beef-witted, blockheaded, bovine,
      chuckleheaded, chumpish, cloddish, cowish, crass, dense, doltish,
      dull, dullard, dumb, duncical, duncish, fat, gross, ineducable,
      klutzy, lumpish, numskulled, oafish, opaque, sottish, stupid,
      thick, unteachable, wrongheaded

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