The Erinyes (/ɪˈrɪniˌiːz/; sing. Erinys /ɪˈrɪnɪs/, /ɪˈraɪnɪs/;[1] Greek: Ἐρινύες, pl. of Ἐρινύς, Erinys),[2] also known as the Furies, were female chthonic deities of vengeance in ancient Greek religion and mythology.