Hlavnímu

Hlavnímu is a grammatical form of the Czech adjective hlavní, meaning main or principal. It is the dative singular masculine or neuter form, used when the noun it modifies is in the dative case. For example, hlavnímu městu (to the capital city), hlavnímu cíli (to the main goal), or hlavnímu projektu (to the main project). The form agrees with the gender and number of the noun: masculine singular or neuter singular. Note that feminine nouns in the dative use a different ending, as with most Czech adjectives.

The adjective hlavní derives from hlava, meaning head, and is used to denote priority, centrality, or importance, as in hlavní problém (the main problem) or hlavní role (the leading role). In standard Czech it is a productive, common adjective that follows regular declension patterns for adjectives in attributive position, modifying a noun within a noun phrase.

Grammatically, hlavnímu is one of the inflected forms of hlavní and appears whenever a noun in the dative case requires a modifier in masculine or neuter gender. It cannot stand alone and always accompanies a noun, forming a pair that marks the indirect object or beneficiary of the action described by the verb.

See also: hlavní město, hlava, hlavní (dictionary entry).