From Middle English Jew, Giu, Giw, Ju, from Old French juiu, Giu, gyu, from Latin iūdaeus (“Judean (i.e. Jew)”), from Ancient Greek Ἰουδαῖος (Ioudaîos), from Ἰουδά (Ioudá), Ἰούδας (Ioúdas, “Judah, Judas, Jude”) + -ιος (-ios, suffix forming adjectives), from Biblical Hebrew יְהוּדָה (y'hudá, “male given name, Yehuda; Judah, Judea”). Doublet of Yid. Displaced Old English Iūdēisċ.