addlepate

from The Collaborative International Dictionary of English v.0.48

Addle-brain \Ad"dle-brain`\, Addle-head \Ad"dle-head`\,
Addle-pate \Ad"dle-pate\, n.
   A foolish or dull-witted fellow. [Colloq.]
   [1913 Webster] Addle-headed
   Addle-brained

from Moby Thesaurus II by Grady Ward, 1.0

40 Moby Thesaurus words for "addlepate":
      addlebrain, addlehead, 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, muttonhead,
      noodlehead, numskull, peabrain, pinbrain, pinhead, puddinghead,
      pumpkin head, puzzlehead, stupidhead, thickhead, thickskull,
      tottyhead