game playing1
/ˈɡeɪm ˌpleɪɪŋ/noun
1The playing of a game or games.
2Specifically. Behaviour according to unstated rules of strategy; manoeuvring with a view to covert goals; strategizing.
Origin
Mid 19th century; earliest use found in Scholars' Leaf. From game + playing.
game-playing2
/ˈɡeɪmˌpleɪɪŋ/adjective
That plays a game or games; engaged in, given to, or characterized by game playing.
Origin
Mid 19th century. From game + playing.