plebeian

From Latin plēbēius (“a commoner; common”) + -an (adjective-forming suffix), from Latin plēbēs + -ius (adjective-forming suffix), possibly under the influence of Middle French plebeyen, plebein, plebien (“a commoner”) and plebeien (“concerning the common people”). Cf. Medieval Latin plēbēiānus (“a commoner”), from plēbēius + -ānus.