A carefree demeanour is often associated with a feeling of ease and lightness, as well as a sense of freedom from worry or stress. There are a number of synonyms that can be used to describe this type of demeanor, including lighthearted, upbeat, optimistic, carefree, easygoing, cheerful, happy-go-lucky, relaxed, playful, carelessly, and free-spirited. These terms all suggest a person who is open to life's experiences, unburdened by the concerns of daily life, and willing to take risks and enjoy the pleasures of the moment. Whether you are trying to describe your own carefree demeanour or that of someone else, these synonyms can help you capture the essence of this joyful quality.