Saudi Arabia
The official language of Saudi Arabia is Arabic. The three main regional variants spoken by Saudis are Hejazi Arabic (about 6 million speakers), Najdi Arabic (about 8 million speakers), and Gulf Arabic (about 0.2 million speakers). Saudi Sign Language is the principal language of the deaf community. The large expatriate communities also speak their own languages, the most numerous of which are Tagalog (700,000), Rohingya (400,000), Urdu (380,000), Egyptian Arabic (300,000), and Indonesian (250,000).
Tunisian Arabic
Tunisian Arabic is one of the Arabic languages within the Semitic branch of the Afroasiatic language family. It is a variety of Maghrebi Arabic like Moroccan and Algerian Arabic, which are mostly unintelligible to Modern Standard or Mashriqi Arabic speakers. It has a considerable number of pre-hilalian dialects but is usually considered in its koiné form to be a mostly Hilalian variety of Maghrebi Arabic because it was affected by the immigration of Banu Hilal in the 11th century, as were the other Maghrebi varieties.