信口开河 xìnkǒukāihé to speak without thinking Origin Definitions Defs Strokes Stroke Words Sentences Sents 信口 xìnkǒu thoughtlessly to speak without thinking; to blurt something out; to say whatever comes to mind开 開 kāi verbparticle to open to open; to unfold; to unseal; (of flowers) to bloom; to carve or cut open河 hé noun river river; waterway