IPA: /ˈspɔrtfəli/
KK: /ˈspɔrtfəl/
In a playful manner, often related to sports or games.
The children sportfully engaged in their games, laughing and having fun.
Sportfully → It is formed from "sport" (from Old French *desport*, meaning pastime or recreation) and "-fully" (meaning in a manner full of). The word "sportfully" means in a manner full of sport or playfulness.
Think of engaging in activities that are full of fun and play — that's what 'sportfully' means.