The term 'ONE CRYING FOUL, SAY' can be solved by the three-letter word UMP. An umpire is an official in a variety of sports who is responsible for enforcing the rules and making sure that the game is played fairly. They are also responsible for making decisions on plays that are disputed by the players or coaches. If an umpire believes that a player or coach is crying foul, they will make a call to indicate that the play was illegal or unfair.