regelen
Regelen is the definite form of the noun regel in several Scandinavian languages, where it means "the rule." In Norwegian and Danish, regelen and reglen, respectively, function as the standard form used when referring to a specific rule within a set of rules. In Swedish, the corresponding definite form is regeln. The term is common in formal writing, education, law, and grammar discussions.
In usage, regelen denotes established norms, guidelines, or legal regulations that govern behavior or procedures. It
Etymologically, regelen derives from the base noun regel, which is cognate with German Regel and English rule