contradiction (n.)youdaoicibaDictYouDict[contradiction 词源字典]
late 14c., from Old French contradiction or directly from Latin contradictionem (nominative contradictio) "a reply, objection, counterargument," noun of action from past participle stem of contradicere, in classical Latin contra dicere "to speak against," from contra "against" (see contra) + dicere "to speak" (see diction).[contradiction etymology, contradiction origin, 英语词源]