Translation

• lit. having presented a flawed argument, one has nothing further to add (idiom)
• fig. unable to provide a convincing argument to support one's position
• to not have a leg to stand on

Synonyms

• 不合情理, 不合理, 不攻自破, 不科学, 主观, 勉强, 岂有此理, 师出无名, 平白无故, 无理, 无由, 无缘无故, 狗屁不通, 理亏, 理屈, 莫名其妙, 说不过去, 输理