ahead in position, time, manner:
after,
behind.
noun:
immature,
unripened,
orthodox,
low,
antiquated,
uncivilized,
traditional,
backward,
antediluvian,
undersized,
middle,
primordial,
musty,
out-of-date,
obsolete,
back,
conventional,
underweight,
nonprogressive,
established,
germinal,
low-tech,
primeval,
early,
fusty,
savage,
embryonic,
rude,
lower,
regressive,
outworn,
customary,
underdeveloped,
oldfangled,
past,
antique,
rudimentary,
undeveloped,
old fashioned,
noncivilised,
green,
hoary,
uneducated,
old-time,
passe,
old,
noncivilized,
unripe,
dated.
advanced:
retarded,
backward,
elementary.
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