jedyna
Jedyna is a Polish adjective in the feminine singular form that means "the only" or "the sole." It derives from the numeral jeden (one) and is related to the masculine form jedyny and the neuter form jedyne. It is used to express exclusivity with a feminine noun, for example jedyna kobieta (the only woman) or to describe a singular quality, such as To jest jedyna opcja (That is the only option).
In typical use, jedyna agrees with a feminine noun in gender and number. It can function attributively,
Etymology traces jedyna to the root of jeden (one), with standard Polish adjective formation to express exclusivity.