defunct

adj. no longer in use, out of fashion; dead, extinct

n. dead person

Adjective
1. no longer in force or use; inactive; "a defunct (or dead) law"; "a defunct organization"
(synonym) dead
(similar) inoperative
2. having ceased to exist or live; "the will of a defunct aunt"; "a defunct Indian tribe"
(similar) dead

(n.)
A dead person; one deceased.
  

(a.)
Having finished the course of life; dead; deceased.
  

no longer in business.