Guttural R
Many Jewish immigrants to Israel spoke a variety of Arabic in their countries of origin and pronounced the Hebrew rhotic as an alveolar tap , similar to Arabic '. Gradually, many of them began pronouncing their Hebrew rhotic as a voiced uvular fricative , a sound similar or (depending on the Arabic dialect) identical to Arabic '. However, in modern Sephardic and Mizrahi poetry and folk music an alveolar rhotic continues to be used.
Israelian Hebrew
Israelian Hebrew (or IH) is a proposed northern dialect of biblical Hebrew (BH). It is proposed as an explanation for various irregular linguistic features of the Masoretic Text (MT) of the Hebrew Bible. It competes with the alternative explanation that such features are Aramaisms, indicative either of late dates of composition, or of editorial emendations. Although IH is not a new proposal, it only started gaining ground as a challenge to older arguments to late dates for some biblical texts since about a decade before the turn of the 21st century: linguistic variation in the Hebrew Bible might be "better" explained by synchronic rather than diachronic linguistics, meaning various biblical texts could be significantly older than many 20th century scholars supposed.