primitive

antediluvian antiquarian archaic austere barbarian barbarous barbaric basic benighted cannibalistic colonial crude crudest early earliest elementary elemental essential fiercest fierce first fundamental medieval more natural more primary more primary more primary most basic most fundamental most original most primary most primary most primary natural old-fashioned old olden organic original passe passer prehistoric primary/prime primary/prime primary primeval primest primest primal primordial radical rough-and-ready rudimental rudimentary rustic savage thoughtless uncivilized underlying undeveloped undomesticated unprocessed unrefined unthoughtful wilder wildest