1925, in translation of work by Viennese-born psychotherapist Wilhelm Stekel (1868-1940), who coined it from Gk. para- "beside, aside" + philos "loving." Used in Eng. translations of his works; not in widespread use until 1950s. first used in "Diagnostic and Statistical Manual of Mental Disorders" in 1980, as a morally neutral and more dignified label than perversion, to which it is nonetheless etymologically similar.