jednej

Jednej is a declined form of the numeral jeden (one) used in West Slavic languages to modify feminine nouns. It appears in contexts where the feminine noun requires a genitive or related oblique case, and it is most common in phrases meaning “of one” or “in one” before a feminine noun.

In Slovak and Polish, jednej is the genitive singular feminine form of jeden. It occurs before feminine nouns in phrases such as jednej ženy (of one woman) or v jednej noci / w jednej nocy (in one night). The form is part of standard numeral declension and is widely encountered in both everyday speech and written text.

The Czech language has a closely related form, jedné, with a diacritic. It functions similarly before feminine nouns in oblique cases, as in v jedné noci (in one night). The Slovak, Polish, and Czech forms share a common Proto-Slavic origin, reflecting historical developments in the declension of numbers.

Etymologically, jednej and its cognates descend from the Proto-Slavic word for one and have parallels in other Slavic languages. The exact spelling varies by language and diacritics, but the underlying function remains the same: a feminine singular form of the numeral one used with feminine nouns in genitive or related cases, typically in phrases indicating quantity or indefiniteness.