Yiddish ( yidish or idish, literally "Jewish") is a High German language of Ashkenazi Jews, and it is written in the Hebrew alphabet. Western Yiddish originated in their culture, which emerged in the 9th century in Central Europe. Many centuries later, Western Yiddish spread to Eastern Europe, where it further developed as Eastern Yiddish, and eventually to other continents. Western Yiddish arose around 1000 AD from Old High German most likely around either Speyer and Worms on the Rhine or Regensburg on the Danube. Before 1500, it separated from German. Western Yiddish developed by adding a Hebrew and Aramaic component and Romance words to various and more dominant Old High German dialects, and mixing them together.