beat (one) at (one's) own game

beat (one) at (one's) own game

To defeat or triumph over someone by using their own strengths, techniques, or tactics to one's own advantage. He thinks that, because he's so much bigger than me, I won't want to fight with my fists, but I'm so quick that I'll be able to beat him at his own game. The senator keeps saying her policies are the will of the people, but if we can get an accurate poll of her constituency, we can beat her at her own game.
See also: beat, game, own
Farlex Dictionary of Idioms.

beat someone at his or her own game

Surpass someone in his or her own specialty or undertaking. For example, Jean knew that if she matched the new store's discount she would keep all her customers and beat the new competitors at their own game . The use of game for any kind of undertaking or scheme dates from the mid-1200s.
See also: beat, game, own, someone
The American Heritage® Dictionary of Idioms by Christine Ammer.

beat someone at their own game

COMMON If you beat someone at their own game, you do something more successfully than they do, although they have a reputation for doing it better than anyone else. There are now any number of self-help books offering women advice on techniques to beat men at their own game. With all her social skills, she soon fitted into Maria's circle of friends, and in fact found that she could beat them at their own game.
See also: beat, game, own, someone
Collins COBUILD Idioms Dictionary, 3rd ed.

beat someone at their own game

use someone's own methods to outdo them in their chosen activity.
See also: beat, game, own, someone
Farlex Partner Idioms Dictionary

beat somebody at their own ˈgame

be more successful than somebody in their special activity, sport, etc.; defeat somebody using their own methods: If you thought someone was trying to cheat you, would you challenge him or try to beat him at his own game?
See also: beat, game, own, somebody
Farlex Partner Idioms Dictionary
See also:
  • beat somebody at their own game
  • beat someone at his or her own game
  • beat someone at their own game
  • chew (one's) own tobacco
  • chew own tobacco
  • on one's own account
  • at will
  • noggin
  • of (one's) own accord
  • of your own accord