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
