In Greek mythology Sisyphus or Sisyphos (/ˈsɪsɪfəs/;Greek: Σίσυφος, Sísuphos) was the king of Ephyra (now known as Corinth). He was punished for his self-aggrandizing craftiness and deceitfulness by being forced to roll an immense boulder up a hill, only to watch it come back to hit him, repeating this action for eternity. Through the classical influence on modern culture, tasks that are both and are therefore described as Sisyphean (/ˌsɪsɪˈfiːən/).
R. S. P. Beekes has suggested a pre-Greek origin and a connection with the root of the word sophos (σοφός, "wise").Otto Gruppe thought that the name derived from sisys (σίσυς, "a goat's skin"), in reference to a rain-charm in which goats' skins were used.
Sisyphus was the son of King Aeolus of Thessaly and Enarete. He was the father of Glaucus, Ornytion, Almus, and Thersander by the nymph Merope, the brother of Salmoneus, and the grandfather of Bellerophon through Glaucus.