keep quiet
idiomDefinition of keep quiet
1
: to not say anything or make any noise
He thought about telling the police what he knew, but he decided to keep quiet. Please keep quiet during the movie.
2
: to not say anything about (something)
She kept her plans quiet.
3
: to prevent (someone or something) from making noise
She gave the dog a bone to keep him quiet.
4
: to prevent (someone) from revealing information about something
They paid money to the witness to keep him quiet.