quieten down
phrasal verbPart ofquieten
quieten down — phrasal verb
1. to become calmer and less active, noisy, or excited, especially after being live
1.phrasal verb
Definition
to become calmer and less active, noisy, or excited, especially after being lively or disruptive
Example
The children finally quietened down after their parents turned off the television.
It took a few minutes for the audience to quieten down so the play could begin.