well-found·​ed ˈwel-ˈfau̇n-dəd How to pronounce well-founded (audio)
: 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 The new audit implies that the public’s skepticism is well-founded. Dan Walters, The Mercury News, 13 Apr. 2024 Whether real or simply in Smith’s head, the pressure is well-founded. Josh Crutchmer, Rolling Stone, 29 Feb. 2024 But national health agencies warn the fear of measles is well-founded. Brandy Zadrozny, NBC News, 5 Feb. 2024 These concerns were well-founded: Twitter Blue was suspended the day after it was launched, after reports of fake accounts and impersonations. Jon Brodkin, Ars Technica, 12 Sep. 2023 Daniel Byman, a senior fellow at the Center for Strategic and International Studies and a part-time senior adviser to the State Department on the International Security Advisory Board, says their fears are well-founded. Shannon K. Crawford, ABC News, 1 Nov. 2023 Blum’s fears were well-founded (more on that in a moment). Indrani Sen, Fortune, 30 Oct. 2023 His decision was well-founded with audiences both young and old falling in love with this mysterious man who travelled in space and time in a big blue box. Cameron K McEwan, The Hollywood Reporter, 19 Aug. 2023 Their fears seemed well-founded when, on the night of the invasion, sensors began reporting sudden spikes in radiation levels in the Chernobyl Exclusion Zone (CEZ)—a 1,000-square-mile forested zone around the plant where radioactive soil from the 1986 disaster had settled. WIRED, 7 Aug. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'well-founded.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1608, in the meaning defined above

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

Dictionary Entries Near well-founded

Cite this Entry

“Well-founded.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/well-founded. Accessed 28 May. 2024.

Kids Definition


: based on good reasons
Last Updated: - Updated example sentences
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