well-founded

adjective

well-found·​ed ˈwel-ˈfau̇n-dəd How to pronounce well-founded (audio)
Synonyms of well-foundednext
: based on excellent reasoning, information, judgment, or grounds

Examples of well-founded in a Sentence

even a well-founded argument can lead to an erroneous conclusion if one of the premises is incorrect a well-founded complaint about the business's treatment of its customers
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These fears are well-founded, as authorities have previously executed many protesters following grossly unfair trials, while many others remain on death row. Hamid Kashani, Twin Cities, 5 Feb. 2026 His concern now seems well-founded. Chris Murphy, Vanity Fair, 29 Jan. 2026 The concerns are well-founded: Higher speeds increase the risk to pedestrians and cyclists in particular. Ariane Lange, Sacbee.com, 21 Dec. 2025 In the settlement agreement, Ceratizit neither admits liability nor concedes that the government’s claims are well-founded. Desiree Mathurin december 19, Charlotte Observer, 19 Dec. 2025 And that uncertainty may be well-founded, because according to The Athletic national baseball writer and former MLB general manager Jim Bowden, there's another All-Star second baseman in the division who could make sense for New York. Jon Vankin, MSNBC Newsweek, 26 Oct. 2025 That fear was probably well-founded. Ryan Whitwam, ArsTechnica, 5 Sep. 2025 One of these targets was to define a sound and well-founded strategy for Calik Denim to become a carbon-neutral company. Angela Velasquez, Sourcing Journal, 28 Aug. 2025 That confidence proved well-founded. Clayton Davis, Variety, 13 Aug. 2025

Word History

First Known Use

1608, in the meaning defined above

Time Traveler
The first known use of well-founded was in 1608

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Cite this Entry

“Well-founded.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/well-founded. Accessed 14 Feb. 2026.

Kids Definition

well-founded

adjective
well-found·​ed
-ˈfau̇n-dəd
: based on good reasons
Last Updated: - Updated example sentences
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