Etymology of the Provençal word seis

Cognates

Dutch zes, Dutch seks, English sex, English six, French sexe, French six, German sechs, German Sex, Icelandic sex, Italian sesso, Italian sei, Latin sex, Latin sexus, Lithuanian šeši, Norwegian sex, Polish szes, Portuguese seis, Russian шесть, Spanish seis, Spanish sexo, Swedish sex, Yiddish zeks