Ákveðinnar

Ákveðinnar is a form of the Icelandic adjective ákveðinn, meaning "certain" or "definite." It is used to signal that a noun is being referred to in a definite way, as opposed to a general or indefinite sense. In Icelandic, adjectives decline to agree with the noun in gender, number and case, so ákveðinn has several inflected forms.

Morphology: Ákveðinnar is the feminine singular genitive form of ákveðinn. This form appears when the modified noun is feminine singular and the phrase is in the genitive case, which frequently occurs after prepositions that govern genitive, such as af. Therefore, you may encounter ákveðinnar in contexts like af ákveðinnar konu, which translates roughly to "of a certain woman."

Usage: The form is most commonly seen in written or formal Icelandic and in constructions that require a feminine singular noun in genitive. It marks the noun as definite in relation to the context and is part of the broader system of Icelandic agreement between adjectives and nouns.

Etymology and relation: The adjective ákveðinn derives from the verb ákveða, meaning "to determine" or "to decide." The word’s meaning of definiteness or specificity is carried into its inflected forms used with nouns in different grammatical cases.

Notes: Ákveðinnar should be distinguished from other forms of ákveðinn, such as those used in nominative or dative contexts and with masculine or neuter nouns. Icelandic adjectives are highly inflected, and the exact ending depends on gender, number, and case.