Abstrakt:
Varied in terms of time and space and based, to a considerable extent, on the phonetic rule, the literature of the Tatars of the Grand Duchy of Lithuania documents the process of shaping the north-eastern borderland variety of Polish on the Belarusian substrate. An analysis of the language of the Tatar tefsir demonstrated both the features described in expert literature, and new facts from the history of the Polish and Belarusian languages (specifically at the level of lexis, semantics, and grammar), concerning the evolution of Belarusian, Polish, and the north-eastern borderland variety of Polish. Moreover, the analysis identified new lexical (also etymological), semantic, derivational, formal (e.g. Polish-Belarusian hybrids), phraseological, and syntactical facts essential in the history of the Polish and Belarusian languages, as well as to research into Polish-Belarusian relations.
