BE BARKING UP THE WRONG TREE


Meaning of BE BARKING UP THE WRONG TREE in English

( informal ) to have the wrong idea about how to get or achieve sth :

You're barking up the wrong tree if you're expecting us to lend you any money.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.