Boeotian
block
blockhead
bonehead
boob
booby
bufflehead
cabbagehead
chowderhead
chucklehead
chump
clod
clodpate
clodpoll
cluck
dabbler
dilettante
dimwit
dodo
dolt
dolthead
donkey
dope
drip
duffer
dullard
dullhead
dumb
dumb cluck
dumbbell
dummy
fool
gowk
greenhorn
greeny
ignoramus
illiterate
illiterati
jobbernowl
know-nothing
lackwit
lamebrain
lightweight
looby
loon
lowbrow
middlebrow
niais
pillock
poor fish
pudden-head
pudding head
stupe
stupid
stupid person
bootjack
bumpkin
bungler
coonskin
coot
knave
lout
ninny
oaf
sciolist
simpleton
smatterer
weakling
wiseacre