一言既出

النطق: yī yán jì chū المعنى الحرفي: Once a word is spoken

الأصل والاستخدام

This idiom describes once (既) a word (一言) is spoken (出). It is often paired with 驷马难追 (four horses cannot catch it) to emphasize that spoken words cannot be taken back. The phrase stresses the weight of verbal commitments. Modern usage emphasizes the importance of being careful with promises, as words once spoken create obligations that must be honored.

متى تستخدم

الموقف: He kept his promise because he believed a man's word is his bond.

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