Her voice quavered as she looked down at the floor.

His voice quavered as it came out over the car radio.

His voice quavered as he heard the silence around him.

She started to say something, but her voice quavered and stuck.

If his voice quavered, age was the cause and not emotion.

His voice was quavering and he hated himself for it.

"I have much experience," she said, her voice quavering a little.

His voice was quavering, though he tried to make it brave.

"I know my own heart," she said, her voice quavering a little.

"I was just trying to help," she said, her voice quavering.