Die

As a phrasal verb die is usually employed to indicate something that is fading.

Phrasal verb	Translation	Examples
die away	indebolirsi (di suoni)	As the train was leaving the platform the voices died gradually away.
die down	spegnersi	The rioters’ shouts  died down as the marchers got away.
die out	estinguersi	There is a strong risk for many species on earth to die out.