rosyjskiej

Rosyjskiej is a Polish adjective form meaning "Russian," specifically the feminine singular form used in several grammatical cases. It is commonly employed to describe feminine nouns and to express relation, origin, or attribution. For example, phrases like "kultura rosyjskiej literatury" (the culture of Russian literature), or "dla rosyjskiej kobiety" (for a Russian woman) illustrate its genitive and dative usage, while "w rosyjskiej literaturze" shows its use in the locative case.

In Polish, adjectives agree with the noun they modify in gender, number, and case. The base adjective is rosyjski. The feminine singular forms include rosyjska (nominative), and in genitive, dative, or locative singular the form is rosyjskiej. Thus rosyjskiej can appear with feminine nouns in different cases, such as "rosyjskiej literatury" (genitive) or "dla rosyjskiej kobiety" (dative). Other related forms of the adjective are rosyjski (masculine), rosyjskie (neuter and feminine plural), rosyjscy (masculine personal plural), and the corresponding genitive/plural forms like rosyjskich.

The term is not a proper noun but a grammatical inflection. It is used across contexts to denote things associated with Russia or Russian origin—languages, culture, politics, literature, and more—by agreeing with the feminine noun it modifies. In summarizing, rosyjskiej is the feminine singular form of rosyjski used in genitive, dative, and often locative constructions, and it forms part of the broader Polish system of adjective declension.