Arab.
For example: Look at this Arab man wearing Arab clothing and reading a book in Arabic.
The adjective from Portugal is Portuguese. Portuguese is the name of the language of Portugal, for example.
Polish is a proper adjective that can be used for Poland.
The proper noun for the proper adjective 'Portuguese' is Portugal, the name of a specific country.
No. It is a proper noun. However, arabic is acceptable.
Danish
The word 'Arabian' is the proper adjective form of the proper noun Arabia.
The proper adjective for something that originally comes from Oman is "Omani." Oman is an Arab nation in Southeast Asia on the coast of the Arabian Peninsula.
The proper adjective for southwest is "southwestern."
The proper adjective is Haitian.
The proper adjective for Portuguese is "Portuguese."
The noun 'Arab' is a proper, singular, concrete noun; a word for a member of the Semitic people of the Arabian Peninsula; a word for a person.The word 'Arab' is also an adjective, a word used to describe a noun as of or relating to Arabia and the people of Arabia
Vietnamese is the proper adjective for Vietnam.
The proper adjective for George is Georgian.
The proper adjective for Siam is Siamese.
Mayan is itself a proper adjective.
Freudian is the proper adjective for Freud.
The proper adjective for Georgia is Georgian.