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 maliciously or dishonestly incriminate someone; to set up (in the sense trap or ensnare)
To join or close by sewing.
To prank, trick, or deceive (a person), whether or not malice is intended.
To fabricate (e.g. a legal case).
To complete arrangements for (a situation), especially clandestinely or prematurely and for one's own benefit.