61 _______________________________________________________ DOI : https://doi.org/10.33258/birle.v2i1.186 Phonological Interference and Morphology of BMT in Student Narrative Essays, Indonesia Irmayani Putri 1 , Syahnan Daulay 2 , Malan Lubis 2 1 Master Student in Indonesia Language, Postgraduate Program, State University of Medan (Unimed), Indonesia 2 State University of Medan (Unimed), Indonesia Abstract : This Study dealt with Morphology of BMT in Student Narrative Essays, Indonesia In Tamiang Dialect. The influence of the downstream dialect language of Tamiang cannot be ignored by the people of Tamiang Hilir. The Lower dialect Tamiang language used since childhood in the home, family environment, and the community has been so pervasive to the users of the local language. This fact shows that the people of Tamiang Hilir often use Indonesian in a formal environment or only certain circles. The method used in this research is descriptive qualitative method. Qualitative research generally tries to form or construct theory through collected data. In the description, it is presented in a systematic, factual, and accurate manner regarding the data and characteristics of the phenomena studied. The result shows that There are phonological equations, morphology in Malay and Indonesian. Because, Indonesian root groups adopted the Malay language as the basis for use. So that many lexical meanings are homonym, homograph and hyponym in Malay that are similar to Indonesian and other regional languages. Keywords : Tamiang Hillir; Morphology; Narrative Essay; Phonology I. Introduction The Tamiang community has its own accent or dialect, most of the Tamiang languages in writing are almost the same as Indonesian. In pronunciation and writing very different spoken. The example of the word "Orang" is still written in the Tamiang language as "people" but the pronunciation is different because the word "R" is thickened at the time of reading. Table 1. Example of Lower Dialect of Tamiang Interference against Indonesian writing No. Tamiang Language of Hilir Bahasa Indonesia 1 Nini Nenek 2 Simbah Siram 3 Nyabak Menangis 4 Mbaco Membaca 5 Nanak Memasak 6 Melainke Melainkan 7 Sehinggo Sehingga The influence of the downstream dialect language of Tamiang cannot be ignored by the people of Tamiang Hilir. The Lower dialect Tamiang language used since childhood in the home, family environment, and the community has been so pervasive to the users of the local language. This fact shows that the people of Tamiang Hilir often use Indonesian in a formal environment or only certain circles. When communicating with the surrounding community or ethnic groups, the speakers of the mother are more likely to use Indonesian, but the Indonesian language that they use is still influenced by the structure of their mother tongue, so there are transfers of elements of regional language into the Indonesian language they use.