Hlavnými

Hlavními is the instrumental plural form of the Czech adjective hlavní, meaning main or principal. It is used to describe plural nouns in the instrumental case, indicating the primary entities involved in an action or relation. The base form hlavní takes the instrumental plural ending hlavními, which is used in contexts such as with, or in phrases like hlavními partnery, hlavními městy, or hlavními cíli.

Etymology and grammar: The word derives from the Czech root hlava (head) and develops into an adjective meaning central or chief. In instrumental plural, the form becomes hlavními, matching the noun it modifies in gender, number, and case. This pattern is common for adjectives of the -ní class and is used in both everyday and formal language.

Usage: Hlavními appears in texts to highlight principal participants or elements. Examples include: S hlavními partnery projektu se dohodlo na spolupráci (an agreement with the main project partners). Hlavními městy České republiky jsou Praha, Brno a Ostrava (the main cities of the Czech Republic are Prague, Brno, and Ostrava). Mezi hlavními cíli projektu patří zlepšení komunikace, snížení nákladů a zvýšení dostupnosti služeb (among the main goals of the project are improving communication, reducing costs, and increasing service accessibility). Hlavními rozdíly mezi oběma návrhy jsou rozsah, náklady a časový horizont (the main differences between the two proposals are scope, costs, and time horizon).

Notes: Hlavními is a grammatical form rather than a standalone noun, and its correct use depends on selecting the appropriate noun in instrumental plural following the Czech case system. See also hlavní for the base adjective and Czech grammar on instrumental case.