muttonhead

from WordNet (r) 3.0 (2006)

muttonhead
    n 1: a stupid person; these words are used to express a low
         opinion of someone's intelligence [syn: {dunce},
         {dunderhead}, {numskull}, {blockhead}, {bonehead},
         {lunkhead}, {hammerhead}, {knucklehead}, {loggerhead},
         {muttonhead}, {shithead}, {dumbass}, {fuckhead}]

from The Collaborative International Dictionary of English v.0.48

muttonhead \muttonhead\ n.
   A stupid or foolish person; a dolt; a numbskull; a blockhead;
   -- disparaging and offensive. These words are used to express
   a low opinion of someone's intelligence. [disparaging]

   Syn: dunce, dunderhead, numskull, blockhead, bonehead,
        lunkhead, hammerhead, knucklehead, loggerhead, shithead,
        fuckhead.
        [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

40 Moby Thesaurus words for "muttonhead":
      addlebrain, addlehead, addlepate, beefhead, blockhead, blubberhead,
      blunderhead, bonehead, bufflehead, cabbagehead, chowderhead,
      chucklehead, clodhead, clodpate, clodpoll, dolthead, dullhead,
      dumbhead, dunderhead, dunderpate, fathead, jolterhead, jughead,
      knucklehead, lunkhead, meathead, muddlehead, mushhead, noodlehead,
      numskull, peabrain, pinbrain, pinhead, puddinghead, pumpkin head,
      puzzlehead, stupidhead, thickhead, thickskull, tottyhead

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