rude

socially incorrect in behavior

resentment flared at such an unmannered intrusion

(of persons) lacking in refinement or grace

lacking civility or good manners;, Willa Cather

want nothing from you but to get away from your uncivil tongue

(used especially of commodities) being unprocessed or manufactured using only simple or minimal processes

natural yogurt

belonging to an early stage of technical development; characterized by simplicity and (often) crudeness

the crude weapons and rude agricultural implements of early man