It is the most terrifying sound I've ever heard in my life.

At that moment a terrifying sound split the air.

As he reached the fiery building, an even more familiar and terrifying sound seized his mind.

Again and again came the terrifying sound of the war outside.

A terrifying sound that stilled the blood of anyone who heard it.

Then to the ears of the three men who stood beside the body came a most terrifying sound.

It was a terrifying sound, like the first rattle of an avalanche.

Slowly, he raised his arms, making a terrifying cracking sound.

He growled, a terrifying sound coming out of a child so small, and pulled his arms away from her with startling force.

I had to know who or what was making that terrifying sound.