The act of perverting something.

A tweak, change, or adjustment of an otherwise true or accurate person, place, thing, or idea, to the point of making the person, place, thing, or idea no longer true or accurate.

1. The quality or state of being perverse.
2. An instance of being perverse.

not what is right or good, perverted

An adjective that describes one whose actions are not deemed to be socially acceptable - in any way, shape or form. Often times the adjective is used in a sexual context.

doing a reversal comeback with a perverted statement

American mis-spelling of perversion.
Perversity actually means "stubborn awkwardness".

Perversive is pervasive perversion or pervasive pornography.