Origins. The Etruscan alphabet originated as an adaptation of the Euboean alphabet used by the Euboean Greeks in their first colonies in Italy, the island of Pithekoussai and the city of Cumae in Campania. In the alphabets of the West, X had the sound value [ks], Ψ stood for [kʰ]; in Etruscan: X = [s], Ψ = [kʰ] or [kχ] (Rix 202–209).. The earliest known Etruscan abecedarium is …