His voice dropped lower, taking on a steely edge that cut through the air.

My voice took on the steely edge of a razor.

Glinn's voice, still soft, suddenly took on a steely edge.

But it had a steely edge, and subtlety was rare.

She could hear the steely edge in her voice herself.

The professor's voice had a steely edge now, like someone who had been there.

"Better than that," she said with a steely edge to her voice.

"It's no coincidence," said the admiral with a steely edge to her voice.

Despite his welcoming manner, there was a steely edge to the man.

The other girl's voice had taken on a steely edge.