blunderhead

from The Collaborative International Dictionary of English v.0.48

Blunderhead \Blun"der*head`\, n. [Blunder + head.]
   A stupid, blundering fellow.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

63 Moby Thesaurus words for "blunderhead":
      addlebrain, addlehead, addlepate, beefhead, blockhead, blubberhead,
      blunderer, bonehead, boor, botcher, bufflehead, bumbler, bungler,
      cabbagehead, chowderhead, chucklehead, clod, clodhead, clodhopper,
      clodknocker, clodpate, clodpoll, clot, clown, dolt, dolthead,
      dullhead, dumbhead, dunderhead, dunderpate, fathead, fumbler, gawk,
      gowk, jolterhead, jughead, klutz, knucklehead, looby, lout, lubber,
      lunkhead, meathead, muddlehead, mushhead, muttonhead, noodlehead,
      numskull, oaf, ox, peabrain, pinbrain, pinhead, puddinghead,
      pumpkin head, puzzlehead, slouch, slubberer, stupidhead, thickhead,
      thickskull, tottyhead, yokel