The term 'Big Leagues' is a phrase used to refer to the highest level of professional sports in the United States. It is composed of three parts: FEDERATIONS (11 letters), Pros (4 letters), and Majors (6 letters). FEDERATIONS refer to the governing bodies of professional sports, such as the National Football League (NFL) or Major League Baseball (MLB). Pros are professional athletes who compete in these leagues. Finally, Majors refer to the highest level of competition within each sport, such as the MLB's World Series or the NFL's Super Bowl. Together, these three components make up the Big Leagues.