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WordReference Random House Learner's Dictionary of American English © 2024val•id /ˈvælɪd/USA pronunciation adj. - sound; just;
well-founded:a valid argument. - having proper authority;
that can be used legally or properly;
authoritative:a valid driver's license. - legally sound, effective, or binding:a valid contract.
va•lid•i•ty /vəˈlɪdɪti/USA pronunciation n. [uncountable] val•id•ness, n. [uncountable]See -val-. WordReference Random House Unabridged Dictionary of American English © 2024val•id (val′id),USA pronunciation adj. - sound;
just;
well-founded:a valid reason. - producing the desired result;
effective:a valid antidote for gloom. - having force, weight, or cogency;
authoritative. - legally sound, effective, or binding;
having legal force:a valid contract. - Philosophy[Logic.](of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction.
- [Archaic.]robust;
well;
healthy.
- Latin validus strong, equivalent. to val(ēre) to be strong + -idus -id4
- 1565–75
- 3.See corresponding entry in Unabridged substantial, cogent.
- 5.See corresponding entry in Unabridged logical, convincing.
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