immature
nonindustrial
arrested
backward
behindhand
callow
coarse
crude
defective
deficient
embryonic
failing
hypoplastic
in arrear
in arrears
in default
in embryo
in ovo
in short supply
in the rough
inadequate
incomplete
infant
lacking
missing
needing
oversimple
part
partial
patchy
reductionistic
reductive
rough
roughcast
roughhewn
rude
rudimental
rudimentary
scant
scanty
scrappy
short
shy
simplistic
sketchy
stunted
unblown
uncultivated
uncultured
uncut
undeveloped
dude/some
glitchy
hands
high-maintenance
inept
infeasible
jointed
million-year-old
one-dimensional
under-funded
underappreciated
underdressed
undernourished
underpopulated
underpowered
undertrained
unsophisticated
war-torn
developed
enveloped