nonintellectual
uncultivable
uncultivatable
unrefined
Gothic
Neanderthal
Philistine
acarpous
agrarian
animal
arid
arrested
backward
barbarian
barbaric
barbarous
barren
bestial
bookless
boorish
brutal
brutish
celibate
childless
churlish
cloddish
clodhopping
clownish
coarse
countrified
country-born
country-bred
crass
crude
deceived
desert
desolate
drained
dried-up
dry
embryonic
exhausted
fallow
farmerish
from the sticks
fruitless
functionally illiterate
gaunt
gelded
grammarless
gross
hayseed
heathen
hick
fertile
inaccessible
inhospitable
marshy
trackless
treeless
uncivilized
uncultured
undeveloped
uneducated
uninhabitable
uninhabited
unlettered
unproductive
untrained
untutored