Learn how to say Back-Handed correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word backhanded:
1made with the back of the hand facing in the direction of movement:
a backhanded pass
2having a meaning that is expressed indirectly or ambiguously:
coming from me, teasing is a backhanded compliment
with the back of the hand or with the hand turned backwards:
Ellwood hit him backhanded