The language historically of Ashkenazic Jews of Central and Eastern Europe, resulting from a fusion of elements derived principally from medieval German dialects and secondarily from Hebrew and Aramaic, various Slavic languages, and Old French and Old Italian.
[Yiddish yidish, Jewish, Yiddish, from Middle High German jüdisch, Jewish, from jude, jüde, Jew, from Old High German judo, from Latin Iūdaeus; see JEW.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.