【驷不及舌】〖sì bù jí shé〗[word spoken goes faster than a team of four horses; Even a team of four horses cannot overtake and recover what is already said]

驷马难追话出口，

不宾之士气吞牛。

及锋而试寡头反，

舌芒于剑斗资修。

一句话说出口，四匹马拉的车也追不回。比喻一句话说出来，再也无法收回。A word say come out, four horse cars could also not chase back. Metaphor a word say come out, can not be recovered. 同：驷马难追。