And a moment later, he sat rigid again with anxiety.

She sat rigid for a moment, and then her shoulders slumped.

She sat rigid in her seat for a moment, just blinking.

Or, perhaps, he had understood and sat rigid with terror.

"For years, I was very close to him," he said, sitting formal and rigid at his desk.

I sat rigid in the back of the seat.

Cash sat rigid with his face to the fire, and would not look.

He sat rigid and spoke with a smooth, academic tone.

Her body sat rigid as a stature, a living statue.

I sat rigid for a moment, ready to start smashing in all directions.