The objective was perfectly quiet, not even anyone on its roof.

Except for the noise that their feet made now and again the children were perfectly quiet.

The house was perfectly quiet and orderly, when the children were still.

Perhaps if we keep perfectly quiet he will go away.

It was not only dusky but perfectly quiet as well.

The room was perfectly quiet, and between the still curtains at the window she could see the sunlight.

They sat on the porch steps in the dark, perfectly quiet.

The forest was perfectly quiet as he neared the town.

The night is perfectly quiet except for the usual noises.

I'm the one who asked, but she kept perfectly quiet.