backstabber

backstabber

One who attacks or betrays someone in a deceitful, underhanded, or treacherous way. He proved to be a backstabber in business, assaulting the character of his competition to get ahead in the game. I thought Mary was my friend, but then she said those mean things behind my back. She turned out to be nothing but a backstabber.
Farlex Dictionary of Idioms.
See also:
  • sharp practice
  • rob (one) blind
  • rob blind
  • rob somebody blind
  • rob someone blind
  • steal (one) blind
  • steal someone blind
  • have (someone) in (one's) pocket
  • have in pocket
  • lead someone a dance
References in periodicals archive
Backstabber applying massage on tea maker's shoulder
SHOWING: Cineworld, Showcase, VUE VERDICT: Bosworth and her young co-stars are wasted in two-dimensional roles, Fishburne glowers in his few scenes, and Spacey dusts off another backstabber from the repertoire
RIPCHORD: Backstabber If someone told you this strobe-lit punk pop came from Liverpool you'd be a fool not to believe them.
The bland backstabber will surely be one of the two most voted-for eviction candidates but may, depending on who she is up against, have enough support within the house to carry on boring viewers for another week at least.
In fact, he thinks she'd be a good foil for backstabber Kipp (Zachary Levi), an assistant producer chockful of sarcasm and huge insults, and Lydia (Andrea Parker), a shallow, beautiful up-and-comer who thought the position would be hers.
I'm talking about the backstabber, the deceptive person, the liar -- you can't have that.
It's not just coincidence, however, that Warren Christopher is not known as a leaker or Clinton backstabber. He represents a different generation.
Wyncotte notes that Rumor World also was hurt by stiff competition from such glossy, upscale magazines as House & Innuendo, Backstabber World, Car & Hearsay and Mature Liar.
Feng shui expert Princess Lim Fernandez, in a huddle with reporters at New World Hotel, described the Illness Star as a 'backstabber.'
She called Kris a backstabber who does not know how to treat anyone correctly.
She added that Siri was obviously playing both sides and called the unique Operating System a backstabber. ( ANI )
One man not believed to be involved in the bidding is Newcastle manager Graeme Souness, who showed Bellamy the door after being branded a "backstabber" and a "liar" by the Welshman.
From Mull but now based in Glasgow, the trio got off to a lively start with Backstabber, with drum dynamo Mark's frenetic playing working well under frontman Paul's effect-heavy guitar.
But, while Alex said what many people had been thinking about Jade (bigmouth, backstabber, etc) I think the row could have cost him the pounds 70,000 prize money.
According to reports, the teen was having "massive" fights with brother Prince, who called her a "backstabber" for bonding with Rowe.