gravajn
Gravajn is the accusative plural form of the Esperanto adjective grava, which means important or serious. It is used to modify a plural noun when the noun is in the accusative case. For example, gravajn aferojn means “important matters” as the direct object. By contrast, the nominative plural form is gravaj aferoj, meaning “important matters” as the subject or predicate noun.
In Esperanto grammar, adjectives do not distinguish gender and agree with the noun in number and case.
Gravajn appears in formal and general Esperanto prose whenever a speaker refers to multiple important matters