skutecznych
Skutecznych is the plural genitive and accusative form of the Polish adjective skuteczny, meaning effective or efficient. In Polish, adjectives agree with the noun they describe in gender, number, and case; skutecznych appears when the described noun is plural and in the genitive or accusative case. For example: Potrzebujemy skutecznych rozwiązań. W kampanii skupiono się na skutecznych działaniach.
The form is commonly used in formal, academic, and media language to indicate that multiple items or
Etymology and related terms: skutecznych derives from the root skuteczny, which comes from the noun skuteczność