Mongolia
noun: Mongolian(s)
adjective: Mongolian
Montenegro
noun: Montenegrin(s)
adjective: Montenegrin
Montserrat
noun: Montserratian(s)
adjective: Montserratian
Morocco
noun: Moroccan(s)
adjective: Moroccan
Mozambique
noun: Mozambican(s)
adjective: Mozambican
Namibia
noun: Namibian(s)
adjective: Namibian
Nauru
noun: Nauruan(s)
adjective: Nauruan
Nepal
noun: Nepalese (singular and plural)
adjective: Nepalese
Netherlands
noun: Dutchman(men), Dutchwoman(women)
adjective: Dutch
Netherlands Antilles
noun: Dutch Antillean(s)
adjective: Dutch Antillean