najprostszej

Najprostszej is a form of the Polish adjective najprostszy, meaning the simplest or the easiest. It is the feminine singular form used when the feminine noun it modifies is in the genitive or dative case.

In Polish, adjectives agree with the nouns they describe in gender, number, and case. For feminine singular nouns, the genitive and dative cases typically use forms ending in -ej, and najprostszej is the standard feminine singular form of the superlative in these cases. The masculine and neuter forms are differently inflected (najprostszy, najprostsze), while the feminine nominative is najprost­sza.

Examples of usage include phrases where a feminine noun is in genitive or dative:

- najprostszej metody (the simplest method, genitive singular)

- najprostszej drodze (to the simplest road, dative singular)

- najprostszej możliwości (the simplest possibility, genitive singular)

The word combines the prefix naj-, which marks the superlative, with the base adjective prosty, and inflects to match the gender and case of the noun it describes. It is common in formal writing and in everyday Polish when contrasting simplicity or ease in relation to a feminine noun.

Etymology: najprostszy derives from prosty (simple) with the superlative prefix naj-, producing najprostszy meaning the most simple; najprostszej is the feminine singular genitive/dative form of that superlative. See also Polish adjectives, degrees of comparison, and noun phrases with genitive and dative constructions.