The term "backhanded" is an adjective that describes a compliment, favor or assistance given in such a way as to conceal some sort of hidden motive or negative intention. It often implies that while someone may be receiving something positive, they are also being manipulated or deceived in the process. The phrase can also refer to a slap on the back with the hand facing away from the body - this is called a "backhanded compliment" when it's used as an insincere form of praise that undermines the recipient, often by pointing out some sort of flaw or weakness.