Learn how to say Rumantsch correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Romansh:
the Rhaeto-Romance language spoken in the Swiss canton of Grisons by fewer than 30,000 people. It has several dialects, and is an official language of Switzerland.
relating to the Romansh language.
from Romansh Roman(t)sch, from medieval Latin romanice ‘in the Romanic manner’