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
By then, Tunisian Arabic reached nationwide usage and became composed of six slightly different but fully mutually intelligible dialects: Tunis dialect, considered the reference Tunisian dialect; Sahil dialect; Sfax dialect; southwestern dialect; southeastern dialect and northwestern dialect. Older dialects became less commonly used and began disappearing. Consequently, Tunisian became the main prestigious language of communication and interaction within the Tunisian community and Tunisia became the most linguistically homogeneous state of the Maghreb. However, Berber dialects, Libyan and Algerian Arabic as well as several Tunisian dialects like the traditional urban woman dialect, Judeo-Tunisian Arabic or even several Tunisian structures like "lā" noun"+š", also practically disappeared from Tunisia.