keep silent

It was in his own interest to keep silent about the matter.

Most of the county players too knew what was going on but kept silent.

He did not say why the Government had kept silent on the issue.

He asked a few questions about her job, then kept silent.

I did not see what other war he could fight, but kept silent.

They both kept silent for a long while, and finally he heard it, too.

He seemed a good man, but one who would keep silent.

He knew enough to keep silent until it was over.

Instead, he looked down at the floor and kept silent.

But he knew no one would believe him, and so kept silent.