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
Many Tunisian and Maghrebi words, like "qarnīṭ ("octopus")", have a Latin etymology. The dialects were later called Pre-Hilalian Arabic dialects and were used along Classical Arabic for communication in Tunisia. Also, Siculo-Arabic was spoken in several islands near Tunisia like Sicily, Pantelleria, and Malta and entered into contact with the Tunisian pre-hilalian dialects. Consequently, it ameliorated the divergence in grammar and structures of all the concerned dialects from Classical Arabic.