Aramaic
Post-Achaemenid Aramaic

The fall of the Achaemenid Empire (c. 334–330 BC), and its replacement with the newly created political order, imposed by Alexander the Great (d. 323 BC) and his Hellenistic successors, marked an important turning point in the history of Aramaic language. During the early stages of the post-Achaemenid era, public use of Aramaic language was continued, but shared with the newly introduced Greek language. By the year 300 BC, all of the main Aramaic-speaking regions came under political rule of the newly created Seleucid Empire that promoted Hellenistic culture, and favored Greek language as the main language of public life and administration. During the 3rd century BCE, Greek overtook Aramaic in many spheres of public communication, particularly in highly Hellenized cities throughout the Seleucid domains. However, Aramaic continued to be used, in its post-Achaemenid form, among upper and literate classes of native Aramaic-speaking communities, and also by local authorities (along with the newly introduced Greek). Post-Achaemenid Aramaic, that bears a relatively close resemblance to that of the Achaemenid period, continued to be used up to the 2nd century BCE.

By the end of the 2nd century BC, several variants of Post-Achaemenid Aramaic emerged, bearing regional characteristics. One of them was Hasmonaean Aramaic, the official administrative language of Hasmonaean Judaea (142–37 BC), alongside Hebrew, which was the language preferred in religious and some other public uses (coinage). It influenced the Biblical Aramaic of the Qumran texts, and was the main language of non-biblical theological texts of that community. The major Targums, translations of the Hebrew Bible into Aramaic, were originally composed in Hasmonaean Aramaic. It also appears in quotations in the Mishnah and Tosefta, although smoothed into its later context. It is written quite differently from Achaemenid Aramaic; there is an emphasis on writing as words are pronounced rather than using etymological forms.

The use of written Aramaic in the Achaemenid bureaucracy also precipitated the adoption of Aramaic(-derived) scripts to render a number of Middle Iranian languages. Moreover, many common words, including even pronouns, particles, numerals, and auxiliaries, continued to be written as Aramaic "words" even when writing Middle Iranian languages. In time, in Iranian usage, these Aramaic "words" became disassociated from the Aramaic language and came to be understood as signs (i.e. logograms), much like the symbol '&' is read as "and" in English and the original Latin et is now no longer obvious. Under the early 3rd-century BC Parthian Arsacids, whose government used Greek but whose native language was Parthian, the Parthian language and its Aramaic-derived writing system both gained prestige. This in turn also led to the adoption of the name ' pahlavi ' (< parthawi, "of the Parthians") for that writing system. The Persian Sassanids, who succeeded the Parthian Arsacids in the mid-3rd century AD, subsequently inherited/adopted the Parthian-mediated Aramaic-derived writing system for their own Middle Iranian ethnolect as well. That particular Middle Iranian dialect, Middle Persian, i.e. the language of Persia proper, subsequently also became a prestige language. Following the conquest of the Sassanids by the Arabs in the 7th-century, the Aramaic-derived writing system was replaced by the Arabic alphabet in all but Zoroastrian usage, which continued to use the name 'pahlavi' for the Aramaic-derived writing system and went on to create the bulk of all Middle Iranian literature in that writing system.

Other regional dialects continued to exist alongside these, often as simple, spoken variants of Aramaic. Early evidence for these vernacular dialects is known only through their influence on words and names in a more standard dialect. However, some of those regional dialects became written languages by the 2nd century BC. These dialects reflect a stream of Aramaic that is not directly dependent on Achaemenid Aramaic, and they also show a clear linguistic diversity between eastern and western regions.
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