Third down is a crucial moment in any football game, as it's the final chance that a team has to make a first down and move the ball down the field. If you're looking for some synonyms for third down, you might consider options like "third and long," "third and short," or "third and goal." Each of these phrases refers to a different scenario that might occur during this key moment in a football game, and they can help add variety and interest to your descriptions of these moments. Other potential synonyms might include phrases like "late in the game," "crucial moment," or "must-convert situation," all of which can help convey the gravity of this pivotal moment in football.