stupid
beetleheaded
blockish
blunderheaded
boneheaded
cabbageheaded
chowderheaded
chuckleheaded
clodpated
dull
dumbheaded
dunderheaded
fatheaded
jolterheaded
joltheaded
knuckleheaded
lunkheaded
muttonheaded
nitwitted
numskulled
pumpkin-headed
sapheaded
stupidheaded
thick
thickheaded
woodenheaded