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
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
That perspective is well-founded.
—Marcus Balzereit, Forbes.com, 15 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
The next few weeks will show if that confidence is well-founded.
—Tim McDonnell, semafor.com, 19 Feb. 2026
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
Matt Helmer, Fortune, 23 May 2026
That perspective is well-founded.
—Marcus Balzereit, Forbes.com, 15 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
The next few weeks will show if that confidence is well-founded.
—Tim McDonnell, semafor.com, 19 Feb. 2026
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
Recent Examples of Synonyms for well-founded
Adjective
-
To overcome this, researchers use quantum error correction, a process that spreads information across multiple physical qubits to create more reliable logical qubits.—
Neetika Walter,
Interesting Engineering,
10 June 2026
-
Past and present are utilized in such a fascinating way as the filmmaker takes his premise to a logical, honest and heartfelt conclusion.—
Brian Truitt,
USA Today,
9 June 2026
Adjective
-
That would be impossible to spend in any reasonable manner in one lifetime.—
Chris Isidore,
CNN Money,
6 June 2026
-
Nobody reasonable wants Sinner, Alcaraz, Djokovic, Aryna Sabalenka, Coco Gauff or the sport’s other biggest stars treated like anonymous qualifiers.—
Dan Zaksheske OutKick,
FOXNews.com,
6 June 2026
Adjective
-
Shortly after that, Butts wrote directly to Kroenke seeking to ease tensions with Hollywood Park, where SoFi Stadium is located, and questioned whether a prior development agreement was still valid.—
Christopher Damien,
Los Angeles Times,
9 June 2026
-
All participants 17 and younger who register by Tuesday, June 30, will receive a free general admission ticket to the 2026 San Diego County Fair, valid Fridays through Sundays from June 12 to July 5.—
Ashley Mackin Solomon,
San Diego Union-Tribune,
9 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
-
What Blinken and the others on the panel had to say was sober and sensible.—
Missy Ryan,
The Atlantic,
10 June 2026
-
As the slightly more sensible Tess, Ginger Minj is the glue of the production, ably carrying the heavy burden of turning the very silly storyline into something broadly coherent.—
Wilson Chapman,
IndieWire,
9 June 2026
Adjective
-
The economic model that funds it—brands spending on content as a long-game alternative to Google ad arbitrage, companies like HubSpot and Robinhood building editorial operations to cultivate readers who might one day become customers — is coherent and, for now, growing.—
Nick Lichtenberg,
Fortune,
9 June 2026
-
As the slightly more sensible Tess, Ginger Minj is the glue of the production, ably carrying the heavy burden of turning the very silly storyline into something broadly coherent.—
Wilson Chapman,
IndieWire,
9 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 13 Jun. 2026.
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