She stood by the door and said in a sibilant whisper: "Go away.
The last words came in a sibilant whisper which brought a stare from Clyde.
They had heard the sibilant whispers of his hidden lips.
It may have been nothing more than a sibilant whisper.
There was a new energy in the sibilant whisper.
Standing in the absolute silence he could just hear the sibilant whisper of the sea.
A sibilant whisper of laughter made Harry turn his head.
I have seen the dragon in the dream,' he said, his voice a sibilant whisper.
It was a sibilant whisper that Jake could not contain.
There was a conversation going on near the door, conducted in sibilant whispers.