primitive

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