信口開河

信口开河
xìnkǒukāihé
  1. to speak without thinking (idiom)
  2. to blurt sth out

CEDICT

to speak carelessly, rapidly and voluminously like the outflow of river water when the sluice gates are opened; to talk nonsense; to talk at random

Wiktionary

不加思索的隨意亂說。《孤本元明雜劇．漁樵閑話．第一折》：「似我山間林下的野人，無榮無辱，任樂任喜，端的是信口開河，隨心放蕩，不受拘束。」《紅樓夢．第六三回》：「賈蓉只管信口開河，胡言亂道之間，只見他老娘醒了，請安問好。」也作「信口開喝」、「信口開合」。

重編國語辭典

指不加思索地隨口說出

維基詞典

Entry Composition

1 信口 xìnkǒu
  1. to blurt sth out
  2. to open one's mouth without thinking
2 開河 kāihé
  1. to open a river
  2. to dig a canal
  3. to thaw (of river)

Related entries

信口 xìnkǒu
  1. to blurt sth out
  2. to open one's mouth without thinking