Switzerland's proper adjective is Swiss.
The proper noun would be Switzerland.
swiss is the answer
The proper adjective for Switzerland is Swiss, as in 'a Swiss bank' or Swiss cheese. Helvetic and Helvetian are less common proper nouns for Switzerland, deriving from the country's Latin name.
Yes, it is a proper adjective. It refers to the people, places, and things of Switzerland.
Yes, it is the proper adjective for people or things of Switzerland. It is also the demonym (noun) for the population as a whole (the Swiss).
Yes, "Swiss" is a proper noun when referring to people or things from Switzerland. It is also an adjective to describe origin or association with Switzerland.
Swiss. It is also always capitalized.
The adjective neutral descibes both Switzerland and neutrons.
The proper adjective for Portuguese is "Portuguese."
The proper adjective for southwest is "southwestern."
The proper adjective for Haiti is Haitian.