Ancient Greek was a language used by the Tau'ri (particularly from Greece) since Earth's dominance to the Goa'uld. Though the language is obsolete on Earth today, it is still widely spoken by the Argosians and the Untouched. (SG1: "The Broca Divide") The marble command chair on Cronus' Ha'tak had an inscription written using this language's alphabet. (SG1: "Enemies"). A derivative of Ancient Greek was spoken on Chalcis and the other member worlds of the Helos Confederacy (SG1: "Sacrifice Moon")