Middie Opponent is a term used in the sport of lacrosse to refer to a CADET, which is a five-letter word. A CADET is a student at a military academy or preparatory school who is training to become an officer in the armed forces. In lacrosse, a middie opponent is a player who plays midfield, which is the area between the attack and defense lines. The middie opponent is responsible for transitioning the ball from one end of the field to the other and for defending against the opposing team's attack.