To stop making noise; be or become quiet or silent
(Intransitive, colloquial, used only in the imperative) I don't believe it!, no way!
To become quiet
Find another word for quiet-down. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for quiet-down, like: hush, grow silent, be hushed, be subdued, be suppressed, become speechless, fall silent, break off, be answered, shut up and clam-up.