Tranquillity
WordNet
noun
(1) A disposition free from stress or emotion
(2) A state of peace and quiet
(3) An untroubled state; free from disturbances
WiktionaryText
Noun
- the state of being tranquil
- the absence of disturbance; peacefulness
- the absence of stress; serenity
- the quality of calm such as that experienced in places with mainly natural features and activities, free from disturbance from manmade ones.