Which language is the origin of German language?

The origin of the German language is Proto-Germanic. This is not a language we can directly study, but rather a reconstructed language that is believed to be the ancestor of all Germanic languages, including German.

Here's a breakdown of the lineage:

* Proto-Indo-European: The ultimate ancestor of German, as well as many other European and Asian languages.

* Proto-Germanic: A daughter language of Proto-Indo-European that emerged around 500 BCE.

* Old High German: The earliest attested stage of the German language, spoken roughly from the 8th to the 12th centuries.

* Middle High German: From the 12th to the 15th centuries, evolving from Old High German.

* Early New High German: A period of standardization leading to the modern German language.

* Modern German: The language spoken today, with various dialects and regional variations.

So, while German is not directly descended from any surviving language, it's ultimately rooted in Proto-Germanic, which itself is descended from Proto-Indo-European.