extinct

Of fire, etc.: no longer alight; of a light, etc.: no longer shining; extinguished, quenched.

Of feelings, a person's spirit, a state of affairs, etc.: put out, as if like a fire; quenched, suppressed.

Of customs, ideas, laws and legal rights, offices, organizations, languages, etc.: no longer existing or in use; defunct, discontinued, obsolete; specifically, of a title of nobility: no longer having any person qualified to hold it.

Of an animal or plant species or group of species, a group of people, a family, etc., having no living members, representatives, or descendants.

Of a geological feature: no longer active; specifically, of a volcano: no longer erupting.

Of a radioisotope: no longer occurring primordially due to having decayed away completely, because it has a relatively short half-life.

Of a person: dead; also, permanently separated from others.