unevolved

archaic basic primeval primordial pristine undeveloped

essential first fundamental old primary

earliest early elementary primal substratal underivative underived underlying

modern new

auxiliary

cultured current present sophisticated

backward primitive underdeveloped

abortive behindhand embryonic half-baked ignored inchoate incipient inexperienced latent potential primordial unactualized unprogressive untaught untrained

adult developed grown mature