Achievement of sexual gratification by inflicting pain or humiliation on others, or watching pain or humiliation inflicted on others.
Deliberate or wanton cruelty, either mental or physical, to other people, or to animals, regardless of whether for (sexual) gratification.
The enjoyment of inflicting pain or humiliation without pity.
(When contrasted with sexual assault.) A physical attack of a sexual nature involving penetration (as apposed to sexual assault which may not involve actual penetration).
A broad term encompassing sexual assault, harassment, indecent assault, rape, and other sexual offences.