Jewish Palestinian Aramaic also known as Jewish Western Aramaic or Palestinian Jewish Aramaic was a Western Aramaic language spoken by the Jews during the Classic Era in Judea and the Levant, specifically in Hasmonean, Herodian and Roman Judaea and adjacent lands in the late first millennium BCE, and later in Syria Palaestina and Palaestina Secunda in the early first millennium CE.
There are some older texts in Jewish Western Aramaic, notably the Megillat Taanit: the Babylonian Talmud contains occasional quotations from these.
Dead Sea Scroll 4Q246, found in Qumran, is written in this language as well.
[1] Jewish Western Aramaic was gradually replaced by Arabic following the Muslim conquest of the Levant in the seventh century.
וו and יי are also used as replacements for their singular counterparts in the middle of words.