Back-handed

He had knocked me to the ground with one back-handed punch.

For the back-handed stroke, the grip is changed.

Axl took this as a back-handed compliment and was momentarily placated.

She did not write about South Africa, except in a back-handed way

Spiral notebooks with wire binders are also a pain in the a** (arm) because the wire coils are always on the left, so consequently left-handed people have to write with their hand resting on the wire, or in some exaggerated, contorted back-handed position.

A good bargain was considered equitable and fair; a back-handed cheat was beyond par.