sì​bù​jí​shé

what is said cannot be unsaid

Senses

驷不及舌/ 駟不及舌 sì​bù​jí​shé what is said cannot be unsaid

A word once spoken cannot be overtaken even by a team of four horses; used to emphasize that one should be cautious with their speech.

References

synonym 驷不及舌/駟不及舌 一言既出,驷马难追/一言既出,駟馬難追