yfirvegun
Yfirvegun is a term found in Icelandic linguistic materials as an inflected form related to weight. Etymology-wise, it appears to be built from the prefix yfir- meaning “over” combined with a stem tied to weight, such as vigt or a related word. The literal sense is typically described as “overweight” or “carrying more weight than normal.” In dictionaries, yfirvegun is presented chiefly as a grammatical or historical form, and in contemporary Icelandic the more common expressions for overweight are yfirvigt (as a noun) or yfirþungur as an adjective, with yfirþungt used for neuter nouns. Because yfirvegun is rarely used in everyday language, it is most often encountered in older texts, linguistic discussion, or dialectal material.
Usage and context-wise, when it does occur, yfirvegun generally functions as an attributive or predicative adjective
See also: yfirvigt, yfirþungur, þungur, þyngd, vigt.
Note: If you intended a different meaning or a proper noun, please provide additional context.