game-changer

American  

[geym-cheyn-jer] / ˈgeɪmˌtʃeɪn dʒər /

Or game changer

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.

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Other Word Forms

• game-changing adjective

Etymology

Origin of game-changer

First recorded in 1960–65

Example Sentences

David Bowles, head of public affairs at the RSPCA, said the animal welfare charity was "delighted" at the strategy and added that the plans to ban puppy farming "could be a real game-changer".

From BBC

“Defense spending is so big that it would really be a major game-changer in terms of basic and military-applied research,” said Guntram Wolff, professor of economics at Université Libre de Bruxelles.

From The Wall Street Journal

The sampling of whale "blow" is a "game-changer" for the health and well-being of whales, said Prof Terry Dawson of King's College London.

From BBC

Soldiers zip around in light, maneuverable vehicles out of a Mad Max movie that one military official called the biggest game-changer since night vision.

From The Wall Street Journal

From the moment he debuted as a 14-year-old freshman at Lynwood, Crowe has been a game-changer.

From Los Angeles Times