Didi

Didi is a German diminutive form of names beginning with the Germanic element theud, meaning people or nation, most commonly serving as a short form of Dietrich or Dieter. The element appears across a wide range of Germanic given names and was highly productive throughout medieval Europe. The name is used informally in German-speaking countries and has also spread as an independent given name in other cultures. Related forms include Dieter, Dietrich, Dirk, and Theodoric.