







信口开呵 is a Chinese idiom (chengyu) meaning “to speak carelessly or thoughtlessly”. To talk offhand; to make irresponsible remarks. Literally, “speak with open mouth at will”.
During the Chu-Han Contention, Liu Bang and Xiang Yu engaged in a fierce battle at Lingbi. Liu Bang suffered a defeat and stationed his troops at Xingyang. Xiang Yu then appointed Ying Bu as 'Lord of Dangyang' and sent him with 400,000 troops to Jiujiang.
Liu Bang dispatched Sui He, an official responsible for receiving guests, to persuade Ying Bu to surrender. Ying Bu initially accused Sui He of 'speaking carelessly' (信口开河, a variant of 信口开呵), but he eventually surrendered to Liu Bang. Liu Bang intentionally provoked Ying Bu at first, but later hosted a grand banquet and enfeoffed him as 'Marquis of Jiujiang'.

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Open the tool →信口开呵 (xìn kǒu kāi hē) is a Chinese idiom (chengyu) meaning “to speak carelessly or thoughtlessly”.
信口开呵 is pronounced xìn kǒu kāi hē in Mandarin Chinese.
Literally, 信口开呵 means “speak with open mouth at will”. It is used to mean “to speak carelessly or thoughtlessly”.
信口开呵 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
比喻随口乱说一气。同“信口开合”。