Members of the group nodded knowingly to one another.

Everyone knowingly nods; hadn't we always been warned about showing work too soon?

His audience, few of whom had ever driven a car, nodded knowingly.

Some of them nodded knowingly and looked a little sad.

Soon we were smiling and nodding knowingly to one another.

Then I recovered, nodded knowingly and swiftly changed the subject.

He looked at each of his friends in turn, nodding knowingly.

I thought about this a few moments, nodding knowingly all the while, then gave up.

She nodded knowingly and said only, "What will you have, sugar?"

Some giggled and nodded knowingly, as if to say, There she goes again.