Zásadovou
Zásadovou is a morphological form of the Czech adjective zásadový, meaning principled or based on principles. It is the feminine singular instrumental and feminine singular accusative form, used when the noun it modifies is feminine. For example, zásadovou politiku (a principled policy) or zásadovou metodu (a principled method). The form is not a separate word with its own meaning; it is an inflected form of the adjective.
From the base noun zásada (principle) the adjective forms cz: zásadový (masculine), zásadová (feminine nominative), zásadové
Usage of zásadovou appears mainly in formal or rhetorical contexts, particularly in political, ethical, or organizational
See also: zásadový, zásadová, zásadové. These related forms cover the broader spectrum of the same root meaning