ALL meanings of backstabber
back·stab
B b - noun backstabber someone who attacks another deceitfully, behind his or her back 3
- noun backstabber A traitor or hypocrite, such as a co-worker or friend assumed trustworthy but who figuratively attacks when one's back is turned. 1
- verb with object backstabber to attempt to discredit (a person) by underhanded means, as innuendo, accusation, or the like. 1