Whispering (noun)

The act of speaking softly, so as to be barely audible.

Origin:

From old english hwisprian, from hwisper (whisper).

Examples:

1. I couldn't hear what she was saying because she was whispering.
2. The whispering of the wind through the trees was soothing.
3. They were caught whispering during the class.
4. He leaned in and whispered the secret in her ear.
5. She was whispering on the phone so as not to wake the baby.