Pederasty or paederasty (/ˈpɛdəræsti/) is a sexual relationship between an adult man and a boy. It was a socially acknowledged practice in Ancient Greece and Rome and elsewhere in the world, such as Pre-Meiji Japan.
In most countries today, the local age of consent determines whether a person is considered legally competent to consent to sexual acts, and whether such contact is child sexual abuse or statutory rape. An adult engaging in sexual activity with a minor is considered abusive by authorities for a variety of reasons, including the age of the minor and the psychological and physical harm they may endure.