on one's game

English

Prepositional phrase

on one's game

1. (informal) Performing as well as one can.

   Synonym: at the top of one's game

   Antonym: off one's game

Further reading

• “on one's game”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “on ones game”, in Collins English Dictionary.