Peninsular Arabic
Peninsular Arabic, or Southern Arabic, are the varieties of Arabic spoken throughout the Arabian Peninsula. This includes the countries of Saudi Arabia, Yemen, Oman, United Arab Emirates, Kuwait, Bahrain, Qatar, Southern Iraq and the tribal people of Jordan (the native Jordanians).
Arabic
According to Charles A. Ferguson, the following are some of the characteristic features of the koiné that underlies all of the modern dialects outside the Arabian peninsula. Although many other features are common to most or all of these varieties, Ferguson believes that these features in particular are unlikely to have evolved independently more than once or twice and together suggest the existence of the koine:Of the 29 Proto-Semitic consonants, only one has been lost: , which merged with . But the consonant is still found in many colloquial Arabic dialects. Various other consonants have changed their sound too, but have remained distinct. An original lenited to , and – consistently attested in pre-Islamic Greek transcription of Arabic languages – became palatalized to or by the time of the Quran and , , or after early Muslim conquests and in MSA (see Arabic phonology#Local variations for more detail). An original voiceless alveolar lateral fricative became . Its emphatic counterpart was considered by Arabs to be the most unusual sound in Arabic (Hence the Classical Arabic's appellation ' or "language of the '"); for most modern dialects, it has become an emphatic stop with loss of the laterality or with complete loss of any pharyngealization or velarization, . (The classical "" pronunciation of pharyngealization still occurs in the Mehri language and the similar sound without velarization, , exists in other Modern South Arabian languages.)