The term 'ONE WHO SHOUTS OUT?' can be answered with the 6-letter word UMPIRE. An UMPIRE is a person who is responsible for making decisions during a sporting event. They are responsible for enforcing the rules of the game and making sure that all players abide by them. Umpires also have the authority to call out any violations or fouls that occur during the game. Umpires are usually seen in baseball, softball, and cricket games.