Ákveðinni

Ákveðinni is a form of the Icelandic adjective ákveðinn, which means "definite," "certain," or "particular." It is used to indicate definiteness of the noun it modifies, a common feature in Icelandic grammar where adjectives agree with the noun in gender, number, and case.

In Icelandic, adjectives have different endings depending on whether they accompany a definite noun and on the noun’s gender and case. Ákveðinn has several inflected forms, and ákveðinni is one of them. Specifically, ákveðinni is the feminine singular form in certain cases, notably within the definite inflection pattern. This form would be used when describing a feminine singular noun in a case such as the dative (and in other contexts where the definite, feminine singular ending is required).

Usage and meaning are similar across the modern Icelandic language: the word expresses that the noun is known or identified in a particular way, rather than being indefinite. As with other adjectives in Icelandic, the exact ending chosen for ákveðinn depends on the noun it modifies and its syntactic role in the sentence.

Etymology traces ákveðinn to Old Norse, where related forms carried the sense of being determined or defined. The modern Icelandic form retains this core meaning, functioning as a predicate or attributive qualifier that marks definiteness in noun phrases.

See also: Icelandic grammar, adjectives, definite inflection, Icelandic nouns and articles.