Etymology: Gk, para + philein, to love
sexual perversion or deviation. A condition in which the sexual instinct is expressed in ways that are socially prohibited or unacceptable or are biologically undesirable, such as the use of a nonhuman object for sexual arousal, sexual activity with another person that involves real or simulated suffering or humiliation, or sexual relations with a nonconsenting partner. Kinds of paraphilia include exhibitionism, pedophilia, transvestism, voyeurism, and zoophilia. paraphiliac, adj., n.