He leaves Skinner to silently ponder his own service in the Vietnam War.

Gregory continued to ponder silently for a moment, then turned away, wordlessly beckoning me.

He paused while everyone in the room silently pondered the implications.

She pondered silently for what seemed a painfully long time.

Karl pondered long and silently, while Anna and James held their tongues.

As it was, he chewed and pondered silently.

She was still silently pondering this as he came back into the room and smiled across at his mother.

While I silently ponder on that change wrought in me, I find no language equal to convey to another a clear idea of it.

Boothby turned back to his work, muttering under his breath, while Keiko pondered silently.

She pondered silently and then was suddenly alert.