die away
US /daɪ əˈweɪ/
UK /daɪ əˈweɪ/

1.
desvanecerse, extinguirse
to gradually disappear or become weaker
:
•
The sound of the music began to die away as we drove further.
El sonido de la música comenzó a desvanecerse a medida que nos alejábamos.
•
Her hopes for success slowly died away.
Sus esperanzas de éxito se desvanecieron lentamente.