Meaning: If someone quietens down, they become calmer and less excited.Synonym: calm down, settle down
- quieten down The kids usually quieten down after lunch, and sometimes they even go to sleep.
- quieten sth/sb down I wish my neighbour would quieten his dog down. It barks for hours.
Variety: This is typically used in British and Australian English but may be used in other varieties of English too.
After their teacher came and quietened them down, the kids