The term 'Certain Arabian Peninsula Inhabitant' can be summarized as a YEMENI, which is a 6-letter word. Yemen is a country located in the southwestern corner of the Arabian Peninsula in Western Asia. It is bordered by Saudi Arabia to the north, the Red Sea to the west, the Gulf of Aden and Arabian Sea to the south, and Oman to the east. The population of Yemen is composed of various ethnic groups, including Arabs, Afro-Arabs, South Asians, and Europeans.