Fairness, honesty, sincerity, virtue, forthrightness, gamesmanship, goodness, honor, honorableness, righteousness, good sport, rectitude, uprightness, decency, trustworthiness, character, virtuousness, veracity, reputability, upstandingness, reliability, integrity, honestness, candor

being slick with it

being a good sport/they’re a good sport

You could say that conduct is “sporting” or “not sporting” but then you might sound br*tish

sportsdwarfship

Conduct (un)becoming of an athlete

gosu