phrasal verb → quiet If someone or something quiets down or if you quiet them down, they become less noisy or less active. [mainly US]
[V P] ⇒ Once the vote was taken, things quieted down quickly.
[V n P] ⇒ Try gradually to quiet them down as bedtime approaches.regional note: in BRIT, usually use quieten down
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers