The topic of pronominal n has been studied by several linguists in many national and international scientific symposiums using different linguistic approaches with regard to its origin, functions and usages in different Turkic dialects such as Chaghatai, Uzbek and New Uighur. However a clear answer to those questions has not been found yet, at least an answer accepted by the majority of Turkologs.
In this article, having summarized the previous studies on the pronominal n, we have taken the issues of its origin, different usages, functions and appearing stages of is functions. The sound n, at the beginning must have been a supporting-functionless sound but then it gained some funtions and moved from being a phoneme to a morpheme. We also discussed whether it is a protective consonant and whether has been used in historical Chaghatai Turkish texts and in modern dialects of Uzbek and Uighur. Despite the common belief in Turkology that the pronominal n has not been used in Chaghatai, Uzbek and Uighur, we are of the opinion that the pronominal n has been used in aforementiond languages.
Keywords: Turkish, pronominal n, extended root, phoneme, morpheme