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Open the tool →驷马莫追 (sì mǎ mò zhuī) is a Chinese idiom (chengyu) meaning “What is said cannot be unsaid”.
驷马莫追 is pronounced sì mǎ mò zhuī in Mandarin Chinese.
Literally, 驷马莫追 means “Four horses cannot overtake (what has been said)”. It is used to mean “What is said cannot be unsaid”.
指话说出口,就不能再收回,一定要算数。同“驷马难追”。