But asked if these demonstrations should be permitted, he sounded almost incredulous.

He put on a good show of sounding incredulous.

"I've never seen you this way," he said, sounding totally incredulous.

Ms. Slate still sounds incredulous when she tells her story.

He would have given a great deal to have sounded less incredulous.

The woman's voice sounded incredulous at first and then she broke into a soft chuckle.

Why did he have to sound so incredulous?

Helen asked, sounding perhaps a bit more incredulous than she meant.

Leslie sounded incredulous and moved away a little from him.

Vale sounded incredulous as she asked, "Why would he do that?"