backstabbing

基本解釋

You're such a back-stabbing guy.
你真是一個背後老是說別人壞話的人。
By the way, this means no gossiping, back-stabbing, etc.
順便說一下，這個意味著不說人家閑話，不在背後說壞話等等。
yy.china-b.com
We weren't really trying to tell anyone that this was Shakespeare, but it is about back-stabbing.
我們真的沒打算做一出莎士比亞戯劇，但這確實是關(guān)於背後一刀的故事。

Save the back stabbing for others or risk having the tables turn on you next year.
FORBES: 10 Ways to Make the Office Holiday Party a Smash
Meanwhile, disillusioned Ukrainians fear that the new government will be as preoccupied with nest-feathering and back-stabbing as the old one.
ECONOMIST: The dream of a democratic, non-corrupt Ukraine may die
Yet the coalition has made little effort to attack corruption, and has wasted energy on bickering and back-stabbing, messily dismissing one would-be reforming prime minister, Radu Vasile, from its own ranks last December.
ECONOMIST: Romania

the act of saying harmful or unpleasant things about a person when they are not present