Boeotian
block
clod
dimwit
dolt
donkey
dope
dullard
dumb cluck
dumbbell
dummy
dunce
fool
gowk
jobbernowl
lackwit
lightweight
looby
loon
niais
nincompoop
ninny
ninnyhammer
nitwit
noddy
put
stupid
thickwit
witling