tyyneys (englanniksi)

calm (s: in a person, the state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion)
calmness (s: state of being calm; tranquillity; silence)
serenity (s: state of being serene, lack of agitation or disturbance)
tranquility (s: state of being tranquil, the absence of disturbance; peacefulness, the absence of stress; serenity)
rest (s: peace, freedom from trouble, tranquillity)
composure (s: calmness of mind or matter, self-possession)
peacefulness (s: state of being peaceful)