If you are in New York City for any length of time, you will encounter some words of the Yiddish language. Here is a brief glossary of Yiddish words to get you up to speed on understanding some of the terms that might not be familiar.
Yiddish words and the Yiddish language, is a member of the West Germanic group of the Germanic subfamily of the Indo-European family of languages.
Although it is not a national language, Yiddish is spoken by about 4 million Jews all over the world, especially in Argentina, Canada, France, Israel, Mexico, Romania, and the U.S.
Before the annihilation of 6 million Jews by the Nazis, Yiddish was the tongue of more than 11 million people. Yiddish, although it is not a national language, is spoken by Jews all over the world. It arose (c.1100) out of a blend of a number of German dialects in the ghettos of Central Europe, and from there it spread to other parts of the world. Phonetically, Yiddish is closer to Middle High German than is modern German. Its vocabulary is basically German, but it has been enlarged by borrowings from Hebrew, Slavic, Romance languages, and English.
This is a very small random list.
To learn more go here: Yiddish Slang For Everyone