The Netherlands, like the country name of Holland, uses the proper adjective Dutch. The word Dutch can also be the plural collective noun for people in or from the Netherlands : the Dutch.
The adjective is "Dutch," as in this sentence: "I love the people in The Netherlands, but I cannot bear the Dutch weather."
Dutch is the adjective form, but it is also a proper noun used as the collective plural demonym, i.e the Dutch is synonymous with the Dutch people. There is no singular of the demonym noun in English.
Yes, the word 'Scandinavia' is a proper noun, the name of a specific place.
The proper adjective for George is Georgian.
The proper adjective for Siam is Siamese.
The proper adjective for Antigua is Antiganantigan
Kuwaiti is the proper adjective for Kuwait.
Yes, the word 'Scandinavia' is a proper noun, the name of a specific place.
The proper adjective for southwest is "southwestern."
The proper adjective is Haitian.
The proper adjective for Portuguese is "Portuguese."
Vietnamese is the proper adjective for Vietnam.
The proper adjective for Georgia is Georgian.
The proper adjective for George is Georgian.
Freudian is the proper adjective for Freud.
Mayan is itself a proper adjective.
The proper adjective for Siam is Siamese.
No, old is not a proper adjective. A proper adjective is an adjective derived from a proper noun, such as Swiss cheese, Bolivian pottery, Chinese silk, etc.
The proper adjective for Antigua is Antiganantigan