nauðsynlegum
Nauðsynlegum is the dative plural form of the Icelandic adjective nauðsynlegur, meaning necessary or essential. In Icelandic, adjectives agree with the nouns they modify for case, number, and gender, and the dative plural ending is typically -um. Therefore, nauðsynlegum is used when describing plural nouns in the dative case.
This form appears in contexts where a plural noun is governed by the dative, such as after
For comparison, the corresponding forms in other cases include nauðsynlegir (nominative plural, masculine), nauðsynlegar (nominative plural,
Etymology: nauðsynlegur derives from the noun nauðsyn, meaning necessity or need, with the suffix -legur forming
In sum, nauðsynlegum is a standard grammatical form used to describe multiple items in the Icelandic dative,