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.
To cause or commit an outrage upon; to treat with violence or abuse.
To inspire feelings of outrage in.
The resentful, indignant, or shocked anger aroused by such acts.
An excessively violent or vicious attack; an atrocity.
An offensive, immoral or indecent act.