1) An untroubled state 2) Calmness 3) Free from disturbances 4) French word used in English 5) Order 6) Peacefulness 7) Quiet 8) Quietness 9) Quietude 10) Stillness Found on https://www.crosswordclues.com/clue/tranquillity
Tranquillity (also spelled tranquility) is the quality or state of being tranquil; meaning calmness, serenity, and worry-free. The word tranquillity appears in numerous texts ranging from the religious writings of Buddhism, where the term passaddhi refers to tranquillity of the body, thoughts and consciousness on the path to enlightenment, to an a... Found on http://en.wikipedia.org/wiki/Tranquillity