infraction (n.)youdaoicibaDictYouDict[infraction 词源字典]
mid-15c., "the breaking of an agreement," from Middle French infraction and directly from Latin infractionem (nominative infractio) "a breaking, weakening," noun of action from past participle stem of infringere "to break, crush" (see infringe).[infraction etymology, infraction origin, 英语词源]