The quality of being related to sports or having a lively, energetic, and athletic style or appearance.
Sportiness is usually seen as positive and fun, like being good at sports or having a lot of energy.
Examples:
Her sportiness makes her a great soccer player.
The car's sportiness makes it look fast and fun.
I like the sportiness of his clothes.
The dog's sportiness makes it fun to play with.
The sportiness of the event made it really exciting.
The sportiness of the shoes makes them perfect for running.