die down
US /daɪ daʊn/
UK /daɪ daʊn/

1.
amainar, disminuir, calmarse
to become less strong, loud, or active; to subside or diminish gradually
:
•
The wind started to die down as evening approached.
El viento empezó a amainar al acercarse la noche.
•
We waited for the excitement to die down before leaving.
Esperamos a que la emoción disminuyera antes de irnos.