die down
US /daɪ daʊn/
UK /daɪ daʊn/

1.
diminuir, acalmar, cessar
to become less strong, loud, or active; to subside or diminish gradually
:
•
The wind started to die down as evening approached.
O vento começou a diminuir à medida que a noite se aproximava.
•
We waited for the excitement to die down before leaving.
Esperamos a excitação diminuir antes de sair.