Synonym of DEMISE

Decline : (typically of something regarded as good) become smaller, fewer, or less; decrease.
Decay : (of organic matter) rot or decompose through the action of bacteria and fungi.
Dormant : (of an animal) having normal physical functions suspended or slowed down for a period of time; in or as if in a deep sleep.
End : a termination of a state or situation.
Demise : the end or failure of an enterprise or institution.

Synonym of Demise is End