sameinuðu

Sameinuðu is an Icelandic adjective meaning "united." It is most commonly encountered as part of the proper noun Sameinuðu þjóðirnar, which translates to the United Nations. The word is derived from the verb sameina, “to unite,” and is the participial form used to describe a state of being joined together.

In Icelandic, Sameinuðu is inflected to agree with the noun it modifies. In the familiar name Sameinuðu þjóðirnar, it appears before the definite plural noun þjóðirnar and functions as a plural adjective meaning “united.” The exact form of the participial adjective can change across cases and numbers in other phrases.

Beyond the United Nations, Sameinuðu can appear in other compound names or phrases that describe unions or coalitions, though its most recognizable usage is in official international terminology. The term is a standard part of modern Icelandic usage and is routinely found in government, media, and educational references to international organizations. As with many Icelandic adjectives formed from verbs, its sense remains closely tied to the concept of becoming or being joined together.