"No." Her whispered answer had an empty sound, like a recognition of abandonment.

Only empty sounds came from Brace's end of the phone.

It is slightly abridged, with some empty sound cut short.

The King laughed, a cruel empty sound that froze the blood.

Between thee and me surely more has passed than empty sound?

Say your own name ten thousand times and it will be an empty sound.

The really empty sounds are the pauses between notes.

They called out above the noise of the surf, an empty, lonely sound.

She did not like the empty sound of the house; it was full of menace for her.

"I, too, hope for a day when such words are but empty sounds."