repression (n.)youdaoicibaDictYouDict[repression 词源字典]
late 14c., noun of action from repress (v.), or else from Medieval Latin repressionem (nominative repressio), noun of action from past participle stem of Latin reprimere. Psychological sense is from 1908; biochemical sense is from 1957.[repression etymology, repression origin, 英语词源]