dvostruku

Dvostruku is the accusative feminine singular form of the Croatian adjective dvostruk, meaning “double.” It is used to describe a feminine singular noun in the accusative case, indicating that something is twice as much or of double quantity.

In Croatian, adjectives agree with the nouns they modify in gender, number, and case. The feminine accusative singular ending is typically -u, so the base form dvostruk becomes dvostruku in the appropriate context.

Usage and examples: dvostruku is placed before feminine singular nouns in the accusative to express doubling. Examples include dvostruku cijenu (a double price), dvostruku dozu lijeka (a double dose of medicine), and dvostruku vrijednost (double value).

Cross-linguistic note: A corresponding feminine accusative form exists in related South Slavic languages such as Bosnian and Serbian, where the adjective dvostruk follows similar declension patterns.

Etymology: dvostruku derives from the base adjective dvostruk, itself formed to mean “double” from the concept of two, with standard inflection to match grammatical gender and case.

See also: dvostruk.