gamely
Sportive; lively; joyful.
That's what I wanted: a challenging race, a gamely fight.
Of or pertaining to game.
The black bass was strongly recommended as a gamely creature and as excellent for the table, and it was put into Meeting-house Pond.
Where it comes from
From game + -ly; compare Old English gamenlīċ (“belonging to games, sportive, theatrical, ridiculous”) and Middle High German gāmelich, gemelich (“joyful”).
Adapted from the Wiktionary entry gamely (CC BY-SA 4.0).