not worth the paper it's written on
idiomPart ofpaper
not worth the paper it's written on — idiom
1. (of a contract, promise, or document) so unreliable or unenforceable that it has
1.idiom
Definition
(of a contract, promise, or document) so unreliable or unenforceable that it has no real value.
Example
The minister's promise turned out to be not worth the paper it was written on.
Without both signatures, this contract isn't worth the paper it's printed on.