Lusory is an adjective that describes something playful or done for the sake of fun. If you're looking for a synonym, there are several words that work well, including amusement, recreation, diversion, game-like, playful, fun-loving, and jesting. Each of these words encompasses the idea of something being done simply for enjoyment or entertainment purposes, rather than for any practical end. Choosing the right synonym for lusory depends on the context in which you're using it and the mood you want to convey. However, all of these words tap into the joy and playfulness that lusory implies, making them great options for a range of situations.