treason: [13] Treason and tradition are doublets – they have a common source. This was Latin trāditiō, a derivative of trādere ‘hand over, deliver’ (source also of English traitor). The notion of ‘handing something on to someone else’ lies behind tradition, but treason (acquired via Anglo-Norman treisoun) gets its meaning from the metaphorically extended Latin sense ‘hand over treacherously, betray’. => betray, tradition, traitor[treason etymology, treason origin, 英语词源]