The phrasal verb "quiet down" is predominantly used in informal contexts, particularly in casual conversations. It is often employed when attempting to reduce noise or commotion, for example, when a group of people are being too loud, someone might tell them to 'quiet down'. This expression has a gentle, sometimes slightly authoritative connotation and is commonly used by parents or teachers addressing children. Additionally, it can be used in settings where the noise level is unexpectedly high or needs to be controlled for concentration or orderliness, such as in libraries or schools. In formal settings, more precise or polite expressions such as "please lower your voice" or "reduce the noise level" might be preferred.
B1
PreIntermediate
1. To become less noisy or excited.
After the teacher entered the classroom, the students began to quiet down.
The storm outside finally started to quiet down after several hours.
2. To make someone or something become less noisy or excited.
He tried to quiet down the barking dogs by giving them treats.
The parents worked hard to quiet the kids down during the ceremony.