“有口無心”，漢語成語，意思是嘴上說了，心裡可沒那樣想。指不是有心說的（say what one does not really mean），可以翻譯爲“be sharp-tongued but not malicious”。
例句：
他是個直來直去的人，說話有口無心。
He's a blunt man, often speaking sharply but meaning no harm.
他這個人有口無心你是瞭解的。
You know what he is like. He says whatever enters his mind.