No, properly is an adverb. The adjective form is proper.
central
Sarah
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.
The proper adjective of Morse code is "Morse." For example, you would say "Morse code message" or "Morse code transcription."
Proper noun, verb ,particle ,adverb,adjective ,noun.
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 George is Georgian.
Mayan is itself a proper adjective.
The proper adjective for Siam is Siamese.
The proper adjective for Georgia is Georgian.
Freudian is the proper adjective for Freud.
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