Afoot and lighthearted are synonymous with cheerful, lively, carefree, and playful. These words denote a state of being free from worries, troubles, and burdens. Being afoot suggests a sense of movement while being lighthearted is more about the emotional state. Other related words include jolly, bubbly, merry, jovial, and frolicsome. Such words are often used to describe happy occasions, relaxed atmospheres, or people who radiate positivity. They are great adjectives to use when trying to express happiness, joy, or contentment. In summary, afoot and lighthearted are wonderful words to use to describe someone or something that is full of life and positive energy.