game face

[ geym feys ]

noun

1. a neutral or intense facial expression that suggests a focus on winning, as in a competitive sport or card game:

   The game faces at this poker tournament are as unflinching as stone.

Word History and Origins

Origin of game face¹

First recorded in 1950–55

Example Sentences

For those 15 excruciating minutes in front of the TV cameras, he put on his best game face.

From The Daily Beast

But you know, the real thing about Mike is he is always going to keep his game face on.

From The Daily Beast