the act of perverting.

the state of being perverted.

a perverted form of something.

any of various means of obtaining sexual gratification that are generally regarded as being abnormal.

Pathology . a change to what is unnatural or abnormal

a perversion of function or structure.

noun

aberration , anomaly , corruption , debauchery , deviance , fetish , immorality , kink * , kinkiness , sexual deviation , misapplication , misappropriation , mishandling , misuse , bestiality , depravity , flagitiousness , turpitude , vice , villainousness , villainy , wickedness