Hverjum

Hverjum is a grammatical form used in Icelandic. It is the dative singular form of the determiner hverr, meaning “every” or “each” when it modifies a noun. It typically appears with masculine or neuter nouns in the dative case and is common in expressions that indicate distributive sense, time, or frequency.

In practice, hverjum is used in phrases that express a distribution across units or occasions. Examples include á hverjum degi (on every day) or í hverjum kafla (in every chapter). For feminine nouns, the corresponding dative singular form is usually fyrrin or hverri, depending on the noun and its declension, with examples such as í hverri bók (in every book). These variations reflect Icelandic gender agreement in the dative case.

Etymology and relation to other forms: hverjum derives from the Old Norse determiner hverr, related to forms meaning “which” but developed a distributive sense in Icelandic. The form hverjum specifically marks dative singular for masculine and neuter nouns, while other gender-specific forms (such as hverri) cover feminine nouns. This pattern is part of a broader Icelandic system in which determiners and adjectives agree with the noun in case, number, and gender.

See also: Icelandic grammar, determiners, distributive expressions, and related forms such as hverr, hvert, and feminine dative variants.