definition
To attack someone (especially verbally) unfairly in a deceitful, underhand, or treacherous manner, especially when they're not present in the place or situation that it happens. (as if stabbing them in the back). See backbite.
definition
The act of one who backstabs.
She was known for her cutting comments and backstabbing ways.
Instead of saying "everyone was backstabbing and evil," you've nicely spun that into the positive of "more oriented towards teamwork."
After struggling with alliances and the usual backstabbing that Big Brother is known for, she finished in fourth place.
When Dorian Lord became involved with David Vickers, One Life to Live spoilers speculated on everything from who they would cheat with to what backstabbing they would participate in.
The shows featured plenty of physical challenges, backstabbing and romantic liaisons, with Frank prominent on all counts.