not hold water

not hold water

To not be or not appear to be true, verifiable, or able to be supported by facts. The image is of a container with holes in it—a metaphor for a position or argument containing "holes" (errors or gaps in reasoning). I'm afraid that excuse just doesn't hold water with me—you still should have had plenty of time to complete the assignment and print it. That old claim has been debunked so many time that it just does not hold water any more.
See also: hold, not, water

not hold water

 
1. Lit. [of a container] not able to contain water without leaking. This old wading pool won't hold water any longer.
2. Fig. not able to be proved; not correct or true. Jack's story won't hold water. It sounds too unlikely. The police's theory will not hold water. The suspect has an ironclad alibi.
See also: hold, not, water

won't hold water

to be inadequate, insubstantial, or ill-conceived. Sorry, your ideas won't hold water. Nice try, though. The prosecution's case wouldn't hold water, so the defendant was released.
See also: hold, water

not hold water

COMMON If a theory or an argument does not hold water, you can prove that it is wrong. That explanation does not hold water, according to senior intelligence sources. It doesn't really matter that not all of the film's arguments hold water. Note: You can also say that a theory or an argument holds water, meaning that it is true or right. If these arguments hold water, then we may have to rethink our policy.
See also: hold, not, water
References in classic literature ?
Other birds, said Solomon, omitted to line their nests with mud, and as a result they did not hold water.
The argument that thousands of Boracay workers will be displaced does not hold water, fresh or salty, "because they are mostly from Manila, Cebu, and elsewhere, they're not all from Aklan.
The arguments being made against this rule do not hold water, and that's why last year, a bipartisan group of senators successfully voted down an effort in Congress to scrap it.
He said the government's reasoning that there weere no funds to increase wages did not hold water because money was being wasted on unfinished projects.
To me, the reason provided by Secretary Roque-that the government has to focus on rehabilitating Marawi-does not hold water because the programs and projects under the Second Compact, which is normally for a 5-year period, can proceed even while rehabilitation efforts are ongoing.
Also, the argument that sight of non-veg food offends sentiments of people does not hold water," he said.
Duale said the narrative that pastoralists are marginalised does not hold water because the 14 counties, among them Garissa, Mandera, Isiolo, Marsabit, Kajiado, have received more money than other counties.
The fact that India illegally crossed the boundary was clear-cut, the excuse was absurd and the logic could not hold water, she added.
The argument that plaintiffs would "suffer irreparable harm without an injunction because they will face unrecoverable compliance costs due to the impending effective date of the statute" also did not hold water, she said.
com/brexit-odds-after-jo-cox-murder-eu-referendum-bookmakers-raise-wager-against-leaving-2384026) various arguments for leaving the European Union, which in his view do not hold water.
Pyongyang's claim that dialogues cannot coexist with sanctions does not hold water either, for sanctions are not the end in themselves but the means to curb the DPRK's repeated violation of UN resolutions and bring relevant parties back to the negotiating table.
And although there's a possibility that some Lebanese, mainly supporters of Hezbollah, can claim to justify its position and involvement in Syria on the pretext that that involvement is meant to ward off sectarian dangers from Lebanon, for the rest of the Lebanese that reasoning does not hold water.
All this and more speaks volumes about the irrefutable fact that the comic image of Canada as the "great defender of human rights" does not hold water when it's a matter of counter-terrorism campaign and international humanitarian law.
The argument given that the coalition is using the truce as a five-day window to regroup does not hold water.
The administration has put the cart before the horse throughout this process and is learning the hard way that the Ashington scheme does not hold water, as projected costs are spiralling and basic matters like sufficient parking spaces have not even been properly addressed.