I just felt it was interesting,' he said, his voice casual as if dismissing the subject.

It was a direct question, asked in a casual voice.

He threw the ten away and tried to keep his voice casual.

I worked very hard at keeping my face and voice casual.

The wizard tried to make his voice casual, and failed.

I looked at her for a moment then tried to make my voice casual.

Nash said in a casual voice, "So no one would take her up the post?"

They talked in low, casual voices, but one of them was always looking at her, sometimes both.

I took a deep breath, hoping to keep my voice casual.

I tried to keep my voice casual and natural.