not worth the paper it is printed on
成語所屬單字worth
not worth the paper it is printed on — 慣用語
1. having no real value or legal force, especially because the promises made cannot
1.慣用語
釋義
一文不值；毫無價值（指文件、承諾無實際效力）
having no real value or legal force, especially because the promises made cannot be trusted.
例句
The contract was not worth the paper it was printed on because the company had already gone bankrupt.