Verschlossen

Tja, das hat ein schloss manchmal so an sich. Vielleicht heisst es ja deshalb schloss ;-)
Dankeschön, Wilhelm!

Portuguese from Brazil has some differences from European Portuguese - still it's Portuguese.
I believe Swiss German is not exactly the same as Germany's German. I'm very curious about idioms. Before travelling abroad, I like to read in tourist guides everything about local idioms: vocabulary, pronunciation of diphthongs, different characters and accents; I also prepare note-books with vocabulary. I try to practice a little and, returning to those places years later, I refresh my memory with the contents of those note-books.

Yes, I know. First of all the pronunciation, but if I remember my friend's explanation correctly, also several different words and expressions.

And you're right about Swiss German and the German spoken in Germany, although there are so many different dialects in Germany. The German spoken close to the Swiss border is quite similar to Swiss German. And yours is an excellent way to learn and get more familiar with a country's language, Dimas!