þörunga
þörunga is a term found in Old Norse literature, most notably in the sagas, referring to a type of blood feud or vengeance. It describes a violent dispute that could span generations, often initiated by a killing or grave offense. The core concept of þörunga involves the obligation of kinsmen to avenge the death or injury of a family member, which in turn could lead to further retaliation from the opposing family. This cycle of violence was a significant aspect of early Scandinavian society.
The practice of þörunga was deeply embedded in the social and legal structures of the Viking Age.