Quietest

adjective

1. With little or no sound; free of disturbing noise.

   "I can't hear the music; it is too quiet."

2. Having little motion or activity; calm.

   "a quiet night at home"

3. Not busy, of low quantity.

   "Business was quiet for the season."

4. Not talking much or not talking loudly; reserved.

   "He's a very quiet man usually, but is very chatty after a few beers."

5. Not showy; undemonstrative.

   "a quiet dress"