The state of being calm, peaceful, and untroubled. After a long day at work, she found serenity in the quiet of her garden.
A title used to address or refer to a reigning prince or similar dignitary. "Your Serenity, the council awaits your decision," the chamberlain announced.
An archaic or literary description of the clear, cloudless sky or calm weather. The serenity of the dawn foretold a bright and gentle day.