svefni
Svefni is a term found in the Icelandic language that most often appears as an inflected form of the noun svefn, meaning sleep. In everyday modern Icelandic, the standard word for the state of sleeping is svefn, while svefni is mainly encountered in older, literary, or dialectal contexts as a grammatical variant of the same noun.
Linguistic usage: Svefni can function as a case form of svefn in traditional Icelandic inflection. It is
Etymology and relations: The word derives from Old Norse svefn, with cognates in related Germanic languages.
Cultural and textual notes: Because it is primarily a literary or archaic form, svefni is often cited
See also: svefn, Old Norse. If you intended a different meaning for "svefni" (such as a place,