Kúpna
Kúpna is the feminine singular form of the Slovak adjective kúpny, used to denote something related to a purchase or buying. It appears in noun phrases where the head noun is of feminine gender, indicating characteristics, terms, or concepts pertaining to buying or sale.
In everyday and legal language, kúpna commonly appears in phrases such as kúpna zmluva and kúpna cena.
grammatically, kúpny is the masculine form, kúpna is feminine, and kúpne is neuter. These forms agree
Usage notes: kúpna is a productive part of the vocabulary for commerce, law, and economics in Slovak.