Meanings of legally watertight in English

I need him to agree that the document Cardale's solicitor drew up is legally watertight.

He would publish his advice on whether the assurances were legally watertight the next day.

The only question mark had been over whether the Finance Ministry had checked the legislation was legally watertight.

Once again a high court judge appointed to guide the court stressed that Malaja's claim was legally watertight.

But Dublin, backed by the EU, demands a legally watertight backstop that it could hold Britain to in international courts.

If I hear from him that it's legally watertight, I'll sign myself out of here and go to London with you.

Such legally watertight commitments, which Boeing, Airbus and Sweden's Saab AB SAABb.ST had already agreed to, contradict rules of the F-35 consortium.

Johnson is adamant the backstop must go, while the EU insists any exit agreement must contain the backstop or a legally watertight equivalent.

But this transition is part of Britain's broader EU divorce settlement which is still being negotiated, and won't be legally watertight until October or later.

Coveney was later quoted as saying a "middle-ground position" on the backstop arrangement could be found, but added it must be legally watertight.