Sentence:  Many foreigners who learn to speak <WSD>High German</WSD> complain that Swiss people only reluctantly reply in <WSD>High German</WSD>. Apparently Swiss people generally don't like to speak <WSD>High German</WSD>. Why is that so? For the Swiss, <WSD>High German</WSD> is a foreign language. 
Meaning of the word marked with <WSD> tags:  The standard variety of German spoken and written throughout the German language area; linguistically a compromise form of Central German and Upper German (with, additionally, a strong Low German adstratum).