Extinct

[Jason Yan]

Extinguished; put out; quenched; as, a fire, a light, or a
lamp, is extinct; an extinct volcano.

[Dianne]

When a species([Dodo Bird]) or entity([Rangers] FC) ceases to exist, dies, is [bereft] of life, kicks the bucket, comes to an end.
An entity can become extinct due to an over-reliance on cheating to succeed and when that ability is taken away, it dies out, making the world a better place. Extinction is a natural and necessary occurrence that occurs to restore order and decency in the world.

[Zipporah Schumaker]

[Adj]. No [longer] [existing] or living.

[Gregory]

(of a species, family, or other larger group) having no living members.

[Julian]

Gone. Wasted. [Trashed]. That [feeling you] get when you know [you wont] remember anything.

[Kit]

[verb]: to [make] extinct.