Topic summary
Variety of Arabic

Extracted from the Wikipedia article Varieties of Arabic.
Language mixing and change
Language mixes and changes in different ways. Arabic speakers often use more than one variety of Arabic within a conversation or even a sentence. This process is referred to as code-switching. For example, a woman on a TV program could appeal to the authority of the formal language by using elements of it in her speech in order to prevent other speakers from cutting her off. Another process at work is "leveling", the "elimination of very localised dialectical features in favour of more regionally general ones." This can affect all linguistic levels—semantic, syntactic, phonological, etc. The change can be temporary, as when a group of speakers with substantially different Arabics communicate, or it can be permanent, as often happens when people from the countryside move to the city and adopt the more prestigious urban dialect, possibly over a couple of generations.