Tranquilness, also known as serenity, calmness, or peacefulness, refers to a state of being free from disturbance or trouble. It is the opposite of chaos or tumult, and is characterized by a sense of quietness, stillness, and relaxation. Other synonyms for tranquilness include quietude, placidity, composure, equanimity, and repose. These words all connote a state of serenity or peacefulness, and are often used to describe the environment, atmosphere, or mood of a particular setting. Whether one seeks tranquility in nature, meditation, or simply taking a deep breath, it is a state of being that all humans can benefit from in today's hectic world.