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Open the tool →一言既出,驷马难追 (yī yán jì chū , sì mǎ nán zhuī) is a Chinese idiom (chengyu) meaning “a word once spoken cannot be taken back”.
一言既出,驷马难追 is pronounced yī yán jì chū , sì mǎ nán zhuī in Mandarin Chinese.
Literally, 一言既出,驷马难追 means “a word once spoken, even a team of four horses cannot catch it”. It is used to mean “a word once spoken cannot be taken back”.
一句话说出了口,就是套上四匹马拉的车也难追上。指话说出口,就不能再收回,一定要算数。