defunct

This term describes a state of complete cessation, often carrying a clinical or formal tone. It is frequently applied to organizations, laws, or technologies that have not just paused, but have permanently ceased to operate or exist. It suggests a finality that distinguishes it from words like dormant or inactive. When used in reference to people, it serves as a formal or slightly archaic euphemism for deceased. In legal or administrative contexts, it specifically denotes the loss of validity or the expiration of a mandate, rendering the subject void and powerless.