比喻不顾事实，随口乱说。原作口中雌黄。《晋书·王衍传》记载，王衍能言，“义理有所不安，随即改更。”时人都称他为“口中雌黄”。雌黄：黄色矿物，可做颜料。古时写字用黄纸，写错了就用雌黄涂抹后重写。
信口雌黄 [xìn kǒu cí huáng]
1. make irresponsible remarks; wag one's tongue too freely; speak at random; make a malicious remark carelessly; talk sheer nonsense; be free with one's tongue; criticize [make statements] freely without careful thought; make deceitful statements [unfounded charges]雌黄是一种橙黄色的矿物，即鸡冠石，可作颜料。古时用黄纸书写，错了即用雌黄涂抹重写。后因称不顾事实的随意批评或乱说为“信口雌黄”。
聂绀弩《读鲁迅先生的〈二十四孝图〉》：“许多东西，说是帝王所发明，一面固然由于古人的愚昧，不知那些东西从何而来，强作解事的信口雌黄，一面也应该是一种大的欺骗。”
语言学
make irresponsible remarks
Arbitrarily
我指导那些不爱戴底细信口雌黄(Arbitrarily)的那些写手所谓的记者(Reporter)：外出别找汽车撞！
make irresponsible remarks
常用成语 Common Chinese Idioms ... 信口开河 Say sth. at a venture; Talk irresponsibly 信口雌黄 Make irresponsible remarks; Criticize or make statements carelessly 前倨后恭 Change from arrogance to humility ...
make irresponsible remarks; wag one's tongue too freely
make irresponsible remarks; wag one's tongue too freely
一个懒惰的三流记者，不把事实调查清楚，就信口雌黄，指控我是这次事件的串谋者。
I was baselessly accused of complicity in the affair by a lazy hack who cannot be bothered to do his homework .
他总是这样的信口雌黄。
He is such a hip-shooter.
美国则规定，代言产品的公众人物必须是产品的使用者，一旦发现其信口雌黄会被重罚。
The United States, public figures speak products must be the product users, once found his irresponsible remarks are subject to heavy penalties.
【词目】 信口雌黄
【拼音】 xìn kǒu cí huáng
【基本解释】指不顾事实，随口乱说或妄作评论。
