The main motivation for rape appears to be aggression, incorporating power, violence, revenge and anger. A study by Scully and Marolla (1985) revealed that in some rapes both punishment and revenge were directed at the victims, who were considered responsible for the rapists' problems.
n. the nonconsensual oral, anal, or vaginal penetration of an individual by another person with a part of the body or an object, using force or threats of bodily harm or taking advantage of the individual's inability to give or deny consent.