keep quiet about somethingkeep quiet (about something)
to not talk about something.
You know you can trust me to keep quiet.The governor has kept quiet about raising taxes.
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.
keep quiet about something
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keep something quiet
say nothing about something; keep something secret: I’ve decided to resign but I’d rather you kept quiet about it.