Boeotian
asinine
beef-brained
beef-witted
blockish
bovine
chumpish
cloddish
cowish
crass
dense
doltish
dullard
dumb
duncical
duncish
fat
gross
ineducable
klutzy
lumpish
oafish
opaque
sottish
stupid
thick
wrongheaded
congenitally
far-out
house-elf
indicatory
insubmissive
smileless
subnormal
superintelligent
tear-filled
theologic
tight-fisted
torrent
unappreciative
unbefitting
unboyish
unimpressionable
unrecognizably
young-looking
teachable