1
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
2
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
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Recent Examples of well-founded
Gen Z’s concerns are well-founded—and echo warnings from leading AI experts and mounting management evidence.
—
Steve Denning, Forbes.com, 14 June 2026
Republicans, meanwhile, are whispering that Democrats' fears of unused Platner oppo are well-founded.
—Philip Elliott, Time, 10 June 2026
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
And the Republicans’ concern is well-founded.
—Douglas E. Schoen, Washington Post, 1 Apr. 2026
That certainty proved well-founded.
—Hanna Wickes, Kansas City Star, 16 Mar. 2026
Steve Denning, Forbes.com, 14 June 2026
Republicans, meanwhile, are whispering that Democrats' fears of unused Platner oppo are well-founded.
—Philip Elliott, Time, 10 June 2026
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
And the Republicans’ concern is well-founded.
—Douglas E. Schoen, Washington Post, 1 Apr. 2026
That certainty proved well-founded.
—Hanna Wickes, Kansas City Star, 16 Mar. 2026
Recent Examples of Synonyms for well-founded
Adjective
-
While this might seem like the logical next step in the hiring process for a Ryan Murphy show, the suggestion felt anything but.—
Connor Hines,
Los Angeles Times,
15 June 2026
-
The move made little logical sense at the time.—
Sean Gregory,
Time,
14 June 2026
Adjective
-
That's so important, because this isn't about reasonable disputes on policy.—
Patrick Ryan,
USA Today,
14 June 2026
-
The most reasonable objection to this view is that resilience returns are too diffuse to underwrite, that avoided losses do not show up in a project’s revenue line the way tolls or tariffs do.—
Ravi S. Bhalla,
Fortune,
13 June 2026
Adjective
-
On the other hand, tourism can raise valid concerns among local communities regarding overtourism, rising housing costs and strain on infrastructure.—
Andrea Onate,
Footwear News,
16 June 2026
-
The eligible resident who receives the most valid write-in votes will become mayor, even if the total is small.—
Carolyn Gusoff,
CBS News,
16 June 2026
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
Adjective
-
Individually, these decisions seem rational.—
Maria Colacurcio,
Forbes.com,
11 June 2026
-
Her rational brain doesn't stand a chance.—
Kurt Knutsson,
FOXNews.com,
9 June 2026
Adjective
-
These monsters—its antitheses—constitute that part of our nature that urges us to be sensible and strong, and that inclines us to see the life drive as trivial, weak, sentimental and immoral.—
Literary Hub,
Literary Hub,
17 June 2026
-
Bold strategies like that don’t always work; the two-stop plan that most teams opted for was the safe, sensible option.—
Jonathan M. Gitlin,
ArsTechnica,
15 June 2026
Adjective
-
The person walking between those two rooms is doing the quiet, exhausting work of keeping both versions of themselves coherent.—
Vibhas Ratanjee,
Forbes.com,
14 June 2026
-
Romantic from the first frame to the last, Park Chan-wook's 2022 masterpiece is a culmination of his steady and coherent approach to disturbing characters and his love for Hitchcock.—
Eric Farwell,
Entertainment Weekly,
12 June 2026
Adjective
-
True, the university’s effort to unload the property sparked a backlash that proved justified.—
The Editorial Board,
Chicago Tribune,
8 June 2026
-
While many agree that the bombing of Hiroshima was justified, there was no public outcry of genocide when the bomb fell on Nagasaki.—
Letters to the Editor,
The Orlando Sentinel,
27 May 2026
Cite this Entry
“Well-founded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/well-founded. Accessed 19 Jun. 2026.
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