I just found a 
wikipedia entry about the 
Yiddish language, and I have to say, I'm impressed about the similarities between German (especially the one used in Austria) and Yiddish. The 
mentioned page explains a few Yiddish words, which clearly show its germanic origin, like 
shlimazl (German: Schlamassel), 
kvetshn (German: quetschen) or 
Shnorrer (German: Schnorrer). I should really learn more about it, since it seems to show a lot about the origin of Austrian dialect and slang words.