There isn't a straightforward answer to which spoken Arabic dialect is the most understandable across the entire Arabic-speaking population. The level of comprehension between speakers of different dialects can vary significantly and is influenced by several factors, including the individual's exposure to other dialects, their age, and their personal experiences. For instance, younger people today may not watch traditional TV as much as previous generations and are more likely to consume content on platforms like YouTube, often in their own dialect or in a foreign language, such as English. This shift means they may not be as exposed to other dialects, like Egyptian Arabic or those from the Levant, which were more prevalent in media like TV and radio in the past.
While younger individuals might listen to music from various Arabic-speaking regions, this exposure alone is often insufficient for developing a deep understanding of different dialects. Listening to music in a foreign language, for example, doesn't guarantee comprehension, as one can enjoy the rhythm and melody without understanding the lyrics. Additionally, there are different registers of speech that can further complicate mutual intelligibility.
While Egyptian Arabic is often considered one of the more widely understood dialects due to its prominence in media and entertainment, this does not guarantee that speakers of other dialects will fully comprehend it. Ultimately, the ability to understand another dialect can differ from person to person, making it difficult to pinpoint a single dialect as the most universally intelligible.
However, it's crucial to consider your intentions and goals for learning Arabic, as these factors will significantly impact your decision on which dialect to focus on. Understanding why you want to learn the language—whether for travel, work, cultural immersion, or personal interest—will guide you in choosing the most relevant dialect for your needs. While mutual intelligibility is a factor, your specific goals and the context in which you plan to use the language will have a more substantial influence on your learning journey.