There was a soft hiss of surprise from behind his shoulder.

She took a deep breath, then let it out with a soft hiss.

A moment later, the lift doors open with a soft hiss and she is gone.

The door gave a soft hiss as she opened it.

He was about to creep forward when a soft hiss stopped him.

There was a very soft hiss: after a little while.

He stepped toward the door, which opened with a soft hiss.

Three steps down, I heard a soft hiss and froze.

The talk about him ceased for a moment and a soft hiss fell again from a window above.

It gave a soft hiss and started to back away.