najbolju
Najbolju is the feminine singular accusative form of the superlative adjective najbolji, used in several South Slavic languages to denote “the best” when describing a feminine noun in the direct object position. The form is derived from the adjective dobro (good) through the comparative bolji and the superlative prefix naj-.
In usage, Croatian, Serbian, Bosnian and Montenegrin employ full gender, number, and case agreement for adjectives.
Najbolju is commonly found in sentences where the noun is feminine and in the accusative case, such
In related Slavic languages with similar morphology, analogous forms appear, united by the same prefix naj-