She filed one or two search requests, but kept the matter quiet.

They were attempting to take on this punishment in return for keeping the matter quiet.

I've done everything possible to keep the matter quiet.

They have been willing so far, at the request of the president of the university, to keep the matter quiet.

Didier having been so anxious to keep the matter quiet.

Let's just keep the matter quiet for the time being.

It would be best to keep the matter quiet.

What I never understood, and still don't understand, is why you were, and apparently are, so concerned to keep the matter quiet.

His lover had been executed of course, though discreetly, to keep the matter quiet.

He had heard the plans to keep the matter quiet.