The term UMPIRE'S SHOUT is composed of four words that are commonly shouted by an umpire during a baseball game. The first word is 'LET', which is shouted when the umpire is allowing the pitcher to throw the ball. The second word is 'SAFE', which is shouted when a runner is SAFE at a base. The third word is 'FOUL', which is shouted when a ball is hit outside of the playing field. The fourth and final word is 'Playball', which is shouted when the umpire is signaling the start of the game.