tranquillity
(noun)
noun
1. an untroubled state; free from disturbances
Similar word(s): quiet, tranquility
Definition categories: state, order
2. a state of peace and quiet
Similar word(s): quietness, quietude, tranquility
Definition categories: feeling, calmness
3. a disposition free from stress or emotion
Similar word(s): placidity, quiet, repose, serenity, tranquility
Definition categories: attribute, calm, calmness, composure, equanimity