WELL-FOUNDED Synonyms: 112 Similar and Opposite Words

well-founded

adjective

ˈwel-ˈfau̇n-dəd

Definition of well-founded

as in logical

according to the rules of logic even a well-founded argument can lead to an erroneous conclusion if one of the premises is incorrect

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in reasonable

based on sound reasoning or information a well-founded complaint about the business's treatment of its customers

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

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.

Recent Examples of well-founded The opponents’ concerns are well-founded. — Alex Weatherall, Boston Herald, 10 June 2026 Add to that an affordability crisis hitting families’ checkbooks and many businesses’ eager push to utilize artificial intelligence, and workers’ sentiments appear well-founded. — Matt Helmer, Fortune, 23 May 2026 Your confusion and hurt are well-founded. — R. Eric Thomas, Chicago Tribune, 18 Apr. 2026 The guidance to assume compromise is well-founded. — Dan Goodin, ArsTechnica, 3 Apr. 2026 See All Example Sentences for well-founded

Recent Examples of Synonyms for well-founded

Adjective

Sholl also notes that the largest station groups may not immediately rush to buy competitors because many of the most logical acquirers are already shouldering a lot of debt.

— Cynthia Littleton, Variety, 23 July 2026
At a glance, de-normalizing alcohol consumption seems like a logical next step after cracking down on smoking.

— Tim Brinkhof, Time, 23 July 2026

Definition of logical

Adjective

Judging by the latest Life, Larry and the Pursuit of Unhappiness, that seems a reasonable assumption.

— Greg Evans, Deadline, 18 July 2026
The political statements made in Nolan’s version are the same ones made in Homer’s poem, or at the very least a reasonable interpretation of the anti-war sentiments therein.

— Erik Kain, Forbes.com, 17 July 2026

Definition of reasonable

Adjective

The deal is valid at participating Wendy's locations nationwide for dine-in, carry out and via the drive-thru for orders placed on the Wendy's app or website.

— Gabe Hauari, USA Today, 18 July 2026
By exposing the model to multiple valid solutions, GIFT broadens its understanding of how CAD designs can be constructed.

— Rupendra Brahambhatt, Interesting Engineering, 18 July 2026

Definition of valid

Adjective

None are credible challengers; Matt Conroy is the more reasoned and moderate of the three.

— The Editorial Board, Chicago Tribune, 11 Feb. 2026
This is a time for cool, calm and reasoned debate, and for legislators to think through the consequences of legislation put forth.

— Bobby Zirkin, Baltimore Sun, 15 Jan. 2026

Definition of reasoned

Adjective

In an article for Marie Claire, Rapinoe trotted out several common left-wing talking points aimed at scaring rational-thinking people into believing that keeping males out of women's sports is somehow bad for girls and women.

— Dan Zaksheske OutKick, FOXNews.com, 14 July 2026
While shocking, the Australian Space Agency said there’s a completely rational, albeit cosmic, explanation.

— Drew Pittock, USA Today, 8 July 2026

Definition of rational

Adjective

With the loss of local NBC affiliates, Telemundo, nine regional sports channels, and 32 national channels, Fubo made the sensible but rare decision to lower subscription prices in December.

— Scharon Harding, ArsTechnica, 17 July 2026
Roseman’s decision to bring back Goedert and pair him with a draft pick (second-round pick Eli Stowers) and inexpensive free agents was a more sensible solution.

— Zach Berman, New York Times, 16 July 2026

Definition of sensible

Adjective

In these emerging ecosystems, K-12 schools, higher education institutions, employers, workforce development organizations, and community leaders work together to create coherent pathways for students.

— Gennaro Piraino, Forbes.com, 21 July 2026
The proportions look coherent, and the surfaces are aerodynamic without looking experimental.

— ArsTechnica, ArsTechnica, 17 July 2026

Definition of coherent

Adjective

The event gives the trip a purpose, which can make the spending feel more justified.

— Jeff Fromm, Forbes.com, 10 July 2026
The answers to those questions are ‘not really’ and ‘probably not’, even if there’s justified criticism that Tuchel prioritised physicality, athleticism and versatility over technical quality.

— Liam Tharme, New York Times, 30 June 2026

Definition of justified

Browse Nearby Words

well-fixed

well-founded

well-groomed

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Style

“Well-founded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/well-founded. Accessed 26 Jul. 2026.

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Synonyms of well-founded

adjective

Example Sentences

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