What part of speech is the English word German?

"German" can be several parts of speech depending on its use in a sentence:

* Adjective: Describing something as being from or related to Germany. Example: "She speaks German."

* Noun: Referring to a person from Germany or the German language. Example: "The German is fluent in English."

* Proper noun: Specifically referring to the country of Germany. Example: "I visited Germany last year."

So, you need to consider the context to determine the specific part of speech.