heaven knows
idiomPart ofheaven
heaven knows — idiom
1. Used to emphasise that you do not know something, or to emphasise the truth of a
1.idiom
Definition
Used to emphasise that you do not know something, or to emphasise the truth of a statement.
Example
Heaven knows where Ritu left her keys — we have looked everywhere.
Heaven knows I have tried my best to help the team succeed.