Sportfully, which means to engage in an activity cheerfully and playfully, has a variety of synonyms that can be used to express the same idea. One such word is "jovially," which means to be jolly and lighthearted. Another similar word is "festively," which implies a celebratory mood. "Merrily" is another synonym that can be used to indicate a cheerful and spirited attitude. "Playfully" and "amusingly" can also be used to mean the same thing as sportfully. "Jestingly" and "humorously" are two other synonyms that imply playfulness and light-heartedness. Whether you use sportfully or any of its synonyms, the idea is to convey a sense of joy and good humor to the activity.