Merrily is an adjective that is often used to describe a cheerful or joyous mood. Some synonyms for merrily include gleefully, joyfully, happily, cheerfully, vivaciously, and lightheartedly. Gleefully suggests a spirited and uncontrolled joy, while joyfully conveys a deep sense of happiness. Happily is more general but still very positive, while cheerfully suggests a cheerful and optimistic attitude. Vivaciously denotes an electrifying and enthusiastic mood, and lightheartedly suggests cheerfulness without any weighty concerns. Using different synonyms for merrily can add more depth and variety to your writing, helping you to express yourself more clearly and effectively.