whisperer

noun4

1. •
   Someone who whispers.
2. •
   Someone who is skilled in taming or training a certain kind of animal, using gentle vocal commands and body language as opposed to physical contact. See horse whisperer.
3. •
   (figurative) Someone who has an uncanny ability to control or manipulate a certain thing or person; an expert or guru in a particular field or subject

   • 'Cause I hear you've been worse than usual this morning and I didn't think that was possible. So I've been dispatched to be the Steve whisperer. — 2015
4. •
   Someone who tells secrets; a gossip.