prejudicial (adj.)youdaoicibaDictYouDict[prejudicial 词源字典]
early 15c., "causing prejudice;" 1530s, "full of prejudice," from prejudice (n.) + -al (1), or else from Middle French prejudicial and directly from Medieval Latin prejudicialis "injurious," from Latin praeiudicium.[prejudicial etymology, prejudicial origin, 英语词源]