keep quiet about something
keep quiet (about something)
To refrain from divulging any information about something. They offered me a ton of money to keep quiet, but I'm still going to testify at the trial. We all agreed to keep quiet about what we found that day.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
keep quiet about something,
keep something quietsay nothing about something; keep something secret: I’ve decided to resign but I’d rather you kept quiet about it.
Farlex Partner Idioms Dictionary © Farlex 2017