treachery /ˈtretʃəri/ n. ［u］&［c］背叛，变节，叛逆行为：the treachery of language语言的欺骗性；his distaste for plots and treacheries他对阴谋和背叛行为的厌恶 His resignation was perceived as an act of treachery.他的辞职被视为背叛。His treachery led to the capture and imprisonment of his friend.由于他的背叛，他的朋友被捕入狱。