extinct

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

Of a geological feature: no longer active; specifically, of a volcano: no longer erupting.

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

(figurative, no longer used) Of a person: dead; also, permanently separated from others.

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

Synonym of extinguish.

(no longer used) To stop (fire, etc.) from burning; also, to stop (light, etc.) from shining; to put out, to quench.

(figurative, no longer used) To suppress (something, as feelings, a person's spirit, a state of affairs, etc.); to quench.

(figurative, no longer used) To kill (someone).

(figurative, no longer used) To put an end to (something) completely; to annihilate, to destroy.

(figurative, no longer used) To cause (an animal or plant species) to die out completely or become extinct (adjective etymology 1 sense 2.3).

(figurative, no longer used) To abolish or make void (a law, a legal right, etc.); also, to cancel (a creditor's claim, a license, etc.).

(no longer used) Synonym of extinction (“the action of becoming or making extinct; annihilation”).