rude - adjective

• lacking civility or good manners
• socially incorrect in behavior
• (of persons) lacking in refinement or grace
• (used especially of commodities) being unprocessed or manufactured using only simple or minimal processes
• belonging to an early stage of technical development; characterized by simplicity and (often) crudeness

rude - thesaurus

bounderish   crude   lowbred   natural   primitive   raw   uncivil   underbred   unmannered   unmannerly   yokelish