won't wash

will not wash

Will not be accepted or believed as true. That kind of excuse may have worked in high school, but it will not wash with me. The deadline for the paper is tomorrow, no extensions. He may be able to skirt the issue in some regions, but that approach won't wash in these parts—these people want straight answers.
See also: not, wash, will

won't wash

Will not stand up to examination, is unconvincing, will not work, as in That excuse about your sick aunt just won't wash. This expression originally alluded to a fabric that would not stand up to washing but by the late 1800s was used figuratively for other kinds of failure.
See also: wash

won't wash

will not be believed or accepted. informal
1998 New Scientist In the end, however, this argument won't wash.
See also: wash

something won’t/doesn’t ˈwash (with somebody)

used to say that somebody’s explanation, excuse, etc. is not valid or that you/somebody else will not accept it: That excuse simply won’t wash with me.
See also: something, wash
References in classic literature ?
But it won't wash historically, because Dreyfus's document (if it was his document) was literally correct.
That won't wash," said the doctor aside to the priest.
AM Simon Thomas' excuse, reported on BBC Wales Politics, that Plaid's conduct of disciplinary matters is "appalling" won't wash.
Briefings have suggested the Government might give a pay rise to nurses but not to other health workers - this just won't wash.
And as the British government appeared to be at loggerheads with EU officials, she said: "This cavalier approach just won't wash in a situation as complex as this, and it's also totally unacceptable when people's jobs and livelihoods are at risk.
ROSS McCRORIE insists the innocence of youth won't wash as an excuse for Rangers' Scottish Youth Cup Final defeat to Celtic.
Bayer Garden Coolglass, which won't wash off in the rain.
You can down vodkas until the cows come home, lady, but it won't wash away what you've done.
Instead, we will be slapping on this St Tropez Instant Tan Wash Off Lotion, PS10, which has 'rainmac technology' to guarantee it won't wash away in the drizzle.
Silver has natural antimicrobial properties, and Silver Edge Gear's patent-pending PE47 technology permanently coats silver to fabric (so it won't wash or wear out).
He has got to understand that when the public have seen the disgusting revelations that we have seen this week, the idea that this organisation, which engaged in these terrible practices, should be allowed to take over BSkyB, to get that 100 per cent stake, without the criminal investigation having been completed and on the basis of assurances from that self-same organisation - frankly that just won't wash with the public," he said.
Having your ministers publicly caricature modern Liverpool as a wasteful, free-spending, leftwing council just won't wash.
Another shopper wrote: "Haha, this won't wash with me.
London, July 8 (ANI): Captain Andrew Strauss has said that while no England team has won the cricket world cup since it was first played 35years ago, blaming a poor performance on the preceding Ashes tour of Australia won't wash as an excuse for failure in 2011.
Their policy of divide and rule may work in other areas, but it won't wash in Klondyke.