Saint Lucian is the proper adjective.
Death is not a good thing to the Navajo and the proper length of a human life is said to be 102 years. 25 1/4 years for each of the four parts. There is not a good day to die, and there is no Navajo afterlife. Living now into long life according to hózhǫ́ with proper k'e (relations) is what is important. The Navajo are not Lakota.
No, Canada (capital C) is a proper noun, the name of a specific country. The proper adjective form is Canadian.
Kittitian or Kittsian is the proper adjective for St. Kitts.
Large and varied are both adjectives. South would be an adjective if it were not part of a proper noun. Amazon is likely a noun adjunct here, but Amazonian would be a proper adjective.
The word Navajo is a noun, a proper noun; the name for the Navajo people of the southwestern US and the town of Navajo, NM. The word Navajo is also a proper adjective, for example Navajo language or Navajo art.A pronoun is a word that takes the place of a noun; for example:The Navajo are known for many crafts. They make world famous silver and turquoise jewelry. (The pronoun 'they' takes the place of the noun 'Navajo' in the second sentence.)
Bostonian and Navajo are the proper adjectives for Boston and Navajo.
The proper adjective for the noun Navajo is Navajo.Example: The Navajo territory is spread over four US states.The proper adjective for the noun Inca is Incan.Example: We studied the Incan artifacts at the museum.The proper adjective for the noun Hinduism is Hindu.Example: There is a Hindu temple on Main Street.The proper adjective for the noun Celt is Celtic.Example: The tour included a visit to a Celtic ruin.The proper adjective for the noun Alaska is Alaskan.Example: Jack has a job on an Alaskan trawler.There is no adjective form for the proper noun Thanksgiving.Example: Grandma made a beautiful Thanksgiving dinner.The noun 'Thanksgiving' is used to describe the noun 'dinner'. A noun used to describe another noun is called an attributive noun.
The possessive adjective for the noun Navajo is their. Example:The Navajo are justly proud to preserve theirlanguage and culture.The possessive pronoun for the noun Navajo is theirs. Example:The responsibility for maintaining the language of the Navajo is theirs.
The proper adjective for Portuguese is "Portuguese."
The proper adjective for southwest is "southwestern."
The proper adjective for Haiti is Haitian.
Vietnamese is the proper adjective for Vietnam.
The proper adjective for Siam is Siamese.
The proper adjective for Georgia is Georgian.
The proper adjective for Mayan is "Mayan."
The proper adjective for George is Georgian.