This paper examines the problem of correct phonetic articulation of the ethnonym Scyth. Based on the rules of ancient Greek grammar, and on the comparison of available instances of the word "Scyth" in clasical Greek and Semitic languages, it is argued that the correct transcription of Scyth is «Scuth». Comparisons of the ancient written records show us that «Scuth» of ancient Greeks and ethnonym «Ashguz/Ishkuz» of ancient Semitic contain the same root - «guz/kuz». This conclusion confirms the fallacy of the beliefs of some scholars, who insist that the word "Scyth" never existed.For this purpose the paper brings forward some evidence, which testifies that ancient Greeks often added the sound «S» at the beginning of foreign names in order to make them sound native to their language.Ethnonyms Scyth, Iskit, Shkuda, Ashguz, Ishkuzai, Ashguzai basically have the same phonation as the name of Turkic ethnonym Guz (Oğuz). The main point is that ethnonyms used in Russian and Azerbaijani science as Skif, in English as Scyth, in Greek as Sıcu08ç, and in Turkish as Iskit is nothing more than the ethnonym Guz (Oğuz).