1491: Pronunciation of ת Jan 11, 2019

Over thousands of years, Hebrew has transitioned from a living language to a liturgical language to again a living language, and while the language has stayed remarkably similar, there are some dialectal differences. There are many different features, but one of the most famous is of the pronunciation of ת. Sephardi (of Spain & North African) Jews pronounce it always as a [t], whereas Ashkenazi (Central & Eastern European) Jews pronounce it as an [s] in the middle or at the end of words. It is thought however, that both of these pronunciations are non-traditional, and like Yemenite Jews, originally it represented something like [θ] (as in THin). Therefore, both dialectal pronunciations involve the tongue moving forward or back respectively.
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