Landessprachen Schweiz

Deutsch/German(orange 63,7%, 17 der 26 Kantone sind einsprachig Deutsch.
Französisch / French (grün/green); 20,4%) Welschland /Suisse romande / Romandie
Italienisch / Italien (blau/blue; 6,5%) Tessin und vier Südtälern Kantons Graubünden
Mundart - Hochdeutsch Lexikon www.schwiiz.eu

Das im Schweizer Kanton Graubünden gesprochene Rätoromanisch (rät. rumantsch/romontsch/rumauntsch) gehört zur Gruppe der Romanischen Sprachen und wird umgangssprachlich meist einfach Romanisch genannt Quelle, mehr Infos: de.wikipedia.org
Mehr zum Sprachen lernen in der Schweiz...

Switzerland is bordered by Germany, France, Italy, Austria and Liechtenstein. Switzerland is multilingual and has four national languages: German, French, Italian and Romansh. Romansh (also spelled Rumantsch, Romansch or Romanche) is one of the four national languages of Switzerland, along with German, Italian and French.

Switzerland lies at the crossroads of several major European cultures that have heavily influenced the country's languages and culture. Switzerland has official languages: German (63% ) in the north, east and centre of the country; French (20.4%) to the west; Italian (6.5%) in the south. (…and all-around English: most people like to speak+learn English ;-)
Romansh, a Romance language spoken locally by a small minority (< 0.5%) in the southeastern canton of Graubünden. More Infos...
The federal government is obliged to communicate in the official languages, and in the federal parliament simultaneous translation is provided from and into German, French and Italian. The German spoken in Switzerland is predominantly a group of dialects collectively known as Swiss German, but written communication typically use Swiss Standard German, whilst a the majority of radio and TV broadcast is (nowadays) in Swiss German as well. Similarly, there are some dialects of Franco-Provençal in rural communities in the French speaking part, known as "Suisse romande", called Vaudois, Gruérien, Jurassien, Empro, Fribourgeois, Neuchâtelois, and in the Italian speaking area, Ticinese (a dialect of Lombard).
Learning one of the other national languages at school is obligatory for all Swiss, so most Swiss are supposed to be at least bilingual.
en.wikipedia.org/wiki/Switzerland

Bildquelle/Source unter creativecommons.org/licenses/by-sa/3.0: www.bfs.admin.ch commons.wikimedia.org

Englishe unbekannte Wörter: Glossar zum Nachschlagen
www.bk.admin.ch anglizismen....