fraternization (n.)youdaoicibaDictYouDict[fraternization 词源字典]
1792, "act of uniting as brothers," noun of action from fraternize on model of French fraternisation. In reference to friendly relations between occupying soldiers and occupied civilians, from 1851; in reference to intimate relations as a violation of military discipline from 1944 (see fraternize).[fraternization etymology, fraternization origin, 英语词源]