game-changer

or game chang·er

[ geym-cheyn-jer ]

noun

1. Sports. an athlete, play, etc., that suddenly changes the outcome of a game or contest.
2. a person or thing that dramatically changes the course, strategy, character, etc., of something:

   Social media has been a real game-changer in the company’s marketing efforts.

Other Words From

• game-changing adjective

Word History and Origins

Origin of game-changer¹

First recorded in 1960–65