transitive verb. To disparage or criticize (someone), usually when that person is absent.

verb. 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.

"At a glance, it may seem like the profession is simply an Imperial analogue to the smuggler, but the agent focuses more on assassination skills that include both close-range "backstab" - style stealth melee and long-range sniper shots."

backstabber