Cadmean victory is an idiom that refers to a victory that comes at a great cost, usually to both sides in a battle or conflict. Some alternatives to this phrase include Pyrrhic victory, hollow victory, or victory at a great cost. A Pyrrhic victory is similar to Cadmean victory but refers specifically to a situation in which the cost of winning is so high that it negates any real benefit. A hollow victory is a victory that is achieved without any real satisfaction, such as a win in a competition that is uncontested or achieved through cheating. Victory at a great cost refers to any victory that comes at the expense of extensive sacrifice or loss.