Critical and having the potential to alter the overall outcome.(adjective)
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Use "game-changing" in a sentence
"Speaking to journalists in Berlin for the presentation of the report, Mr Sidibe hailed what he called a "game-changing year.""
"One of these advocates is Barak Seener, a Middle East expert with London’s Chatham House Royal United Services Institute who says the rebels need what he calls "game-changing weapons.""
"This is where the notion of "game-changing" technologies comes in -- and where many increasingly selective investors are looking to put their capital."