ἄμεικτον ἑαυτοῖς καταστῆσαι → refuse to admit him to their society
invĕtĕrātus,¹¹ a, um, part. de invetero.
inveteratus inveterata, inveteratum ADJ :: old, inveterate, of long standing; hardened by age
inveterātus, a, um, s. invetero.