The term 'filled with joy' can be expressed in a variety of ways. The 6-letter solution, 'ELATED, ' means to be extremely happy and excited. The 8-letter solution, 'EUPHORIC, ' is an even stronger expression of joy, meaning to be in a state of intense happiness and excitement. The 8-letter solution, 'raptured, ' is an even more intense expression of joy, meaning to be in a state of ecstatic joy or delight. Finally, the 9-letter solution, 'OVERJOYED, ' is the strongest expression of joy, meaning to be filled with great joy and happiness.