A proper adjective is a word to describe a noun that is derived from a proper noun; for example, Swiss cheese, Italian leather, Peruvian pottery, Florida Orange Juice, etc.
No, properly is an adverb. The adjective form is proper.
central
Sarah
The proper adjective of Morse code is "Morse." For example, you would say "Morse code message" or "Morse code transcription."
Elizabethan, Italian, Norwegian, Carolingian.
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.
Those letters will spell the proper noun or proper adjective African.
The proper adjective for Antigua is Antiganantigan