traitoryoudaoicibaDictYouDict[traitor 词源字典]
traitor: [13] Traitor and tradition [14] come from the same ultimate source: Latin trādere. This was a compound verb formed from the prefix trāns- ‘across’ and dare ‘give’ (source of English data, date, etc). It originally meant ‘hand over, deliver’, and it is this sense that (via the derivative trāditiō) has given English tradition – etymologically something ‘handed over’ to succeeding generations. But it was also used metaphorically for ‘betray’, and this meaning has passed through into English in betray, traitor, and treason.
=> betray, tradition, traitor, treason[traitor etymology, traitor origin, 英语词源]
traitor (n.)youdaoicibaDictYouDict
c. 1200, "one who betrays a trust or duty," from Old French traitor, traitre "traitor, villain, deceiver" (11c., Modern French traître), from Latin traditor "betrayer," literally "one who delivers," agent noun from stem of tradere "deliver, surrender" (see tradition). Originally usually with a suggestion of Judas Iscariot; especially of one false to his allegiance to a sovereign, government, or cause from late 15c.