it will come out in the wash
come out in the wash
1. slang To be exposed, as of a lie or something hidden. Whatever the mayor is trying to cover up will all come out in the wash.
2. slang To have a positive resolution (like a clothing stain that is washed away). Try not to worry too much about this setback—it will come out in the wash.
it will (all) come out in the ˈwash
(spoken)1 used to say that the truth about a situation will be made known at some time in the future: You can’t hide what you’ve done for ever. It’ll come out in the wash, you know.
2 used to make somebody less anxious by telling them that any problems or difficulties will be solved in the future: ‘Some of the documents still haven’t arrived!’ ‘Don’t worry, there’s probably been a slight mix-up — it’ll all come out in the wash.’