nauðsynlegir
Nauðsynlegir is the masculine plural nominative and accusative form of the Icelandic adjective nauðsynlegur, meaning "necessary" or "essential." It is used to describe masculine plural nouns or mixed-gender groups and agrees with the noun in gender, number, and case.
In Icelandic, adjectives decline for gender, number, and case. Therefore, nauðsynlegir appears with masculine plural nouns
The term is common in formal and everyday language to designate requirements, prerequisites, or core elements.
Etymology and related forms: nauðsynlegir is derived from the noun nauðsyn, meaning necessity, combined with the