be on (one's) game

(redirected from be on somebody's game)

be on (one's) game

To perform with great skill in an activity or pursuit, such as a game, sport, or specific task. I can't believe I missed that catch—I'm just not on my game today. He's getting crushed in the debate tonight. You can tell his opponent is on her game.
See also: game, on
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

be on (one's) game

To play a sport with great skill.
See also: game, on
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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