The frightening sound of gunfire did not disperse the people, though.

It was the most frightening sound he had ever heard.

With it came a new sound - deep and frightening.

The frightening sound filled the forest, echoing through the trees.

Don Juan said that it was the most frightening sound he had ever heard.

Finally I could hear a frightening sound ahead, and a big, black animal came bounding toward us.

A frightening sound, in truth, to some immigrant citizens even 50 years after the end of fascism.

Jupiter inclined his head in the direction of the last frightening sound.

It was a thin, high, frightening sound, on the edge of hysteria.

It took him several seconds to focus his attention on the source of the frightening sound.