In a backhanded manner.
inclining to the left
Indirect.
With the back of the hand.
Backwards, turned around.
Retrospective, occurring after the fact rather than in advance.
Self-serving, corrupt, slipshod, or neglectful.
Insincere, sarcastic, ironic, or self-contradictory.
Involving a backward flip of the hand.
In a traitorous manner; treacherously.