N-UNCOUNT（不可数名词） If you refer to someone's behaviour as one-upmanship, you disapprove of them trying to make other people feel inferior in order to make themselves appear more important. 高人一等 [oft supp N] [表不满]
The two men are playing a game of political one-upmanship.
这两个男人在玩一场谁更高人一等的政治游戏。