nieznanej

In a sentence

• Spotkałem się z osobą nieznanej mi narodowości.

  I met a person of a nationality unknown to me.

  In this sentence, 'nieznanej' is used as an adjective describing 'nationality,' illustrating lack of knowledge or familiarity.

• Książka z nieznanej epoki została odkryta.

  A book from an unknown era was discovered.

  Here, 'nieznanej' is an adjective referring to the 'era,' conveying that the specific time period is unidentified.

• Tajemnica nieznanej pochodzenia fascynowała badaczy.

  The mystery of an unknown origin fascinated researchers.

  In this example, 'nieznanej' is used as an adjective modifying 'origin,' indicating an unrecognized or mysterious aspect.