Valid
Valid adjective - According to the rules of logic.
Usage example: your argument isn't valid because you're taking what should be the conclusion and using it as a premise
Well-founded is a synonym for valid in good topic. In some cases you can use "Well-founded" instead an adjective "Valid", when it comes to topics like right. popular alternative
Nearby Words: validity, validation
Well-founded
Well-founded adjective - According to the rules of logic.
Usage example: even a well-founded argument can lead to an erroneous conclusion if one of the premises is incorrect
Valid is a synonym for well-founded in good topic. You can use "Valid" instead an adjective phrase "Well-founded". popular alternative
Mutual synonyms
Cite this Source
Well-founded and Valid. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/valid/well-founded
Valid & Well-founded. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/valid/well-founded>.
Well-founded or Valid. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/valid/well-founded.
