quiet (without much noise or activity): Be quiet! You’ll wake the baby. The streets are quite quiet today.
silent (completely quiet): Everyone left, and the room was silent.
calm (quiet and peaceful): The city is calm again after the revolt was quelled.
peaceful (calm and free from disturbance): It’s so peaceful here in the countryside.
tranquil formal (pleasantly quiet and peaceful): We stayed at a tranquil inn in the village.