die down
US /daɪ daʊn/
UK /daɪ daʊn/

1.
tomber, retomber, s'apaiser
to become less strong, loud, or active; to subside or diminish gradually
:
•
The wind started to die down as evening approached.
Le vent a commencé à tomber à l'approche du soir.
•
We waited for the excitement to die down before leaving.
Nous avons attendu que l'excitation retombe avant de partir.