A ghoul is a monster or evil spirit in Arabian mythology, associated with graveyards and consuming human flesh. The oldest surviving literature that mention ghouls is likely One Thousand and One Nights. The term was first used in English literature in 1786, in William Beckford's Orientalist novel Vathek, which describes the ghūl of Arabian folklore. In modern fiction, the term has often been used for a certain kind of undead monster. By extension, the word ghoul is also used in a derogatory sense to refer to a person who delights in the macabre, or whose profession is linked directly to death, such as a gravedigger or graverobber.