najczystszych
Najczystszych is a form of the Polish superlative adjective najczysty, meaning the purest. It is used to describe a plural noun, signaling the highest degree of purity within a group. The superlative is created by prefixing naj- to the base czysty, and then inflecting according to standard Polish adjective endings. In plural, najczystszych appears in the genitive and accusative cases, and it agrees with the noun it modifies.
In practice, najczystszych is typically found before plural nouns. For example, najczystszych źródeł wody means “the
Usage notes: najczystszych tends to appear in descriptive, formal, or literary prose where purity is being compared