v.夸张；做得过分；过分高估；将（球）打到果岭之外；过分依赖……的力量；表演过火

The marathon runner raced ahead in the early stages of the race but he had overplayed his hand and had to drop out exhausted with only three miles to go. 这位马拉松赛跑者在比赛的开始阶段跑在前面，但他过高地估计了自己的力量，结果在离终点仅3英里时，跑得筋疲力尽力而不得不退出比赛。

The union is in danger of overplaying its hand in the current dispute. 工会在目前纠纷中高估自己实力有失败之虞。