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
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
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
Advertisement Barring Platner bowing out in time—which seems unlikely—Democrats are hunkering down, desperately hoping there aren’t more Platner revelations left to come out before Election Day.
—
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
Advertisement Barring Platner bowing out in time—which seems unlikely—Democrats are hunkering down, desperately hoping there aren’t more Platner revelations left to come out before Election Day.
—
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
-
The business solution provider, on the other hand, acts as the logical custodian of critical processes.
-
Those are legitimate concerns, and yet the rebuttals are just as logical.
Adjective
-
To prove religious discrimination in the workplace, a party needs to prove disparate treatment or that the employer failed to make reasonable accommodations for someone trying to practice their religious beliefs.
-
Use earphones for music and movies and keep conversations at a reasonable volume.
Adjective
-
Club sources insist the process of finding a successor to Marco Silva remains ongoing and that comments made last week by Fulham vice chairman and director of football operations Tony Khan that there were two leading candidates for the role remain valid.
-
Yet amidst the hype, scientists working in the aging field are broadly in agreement that the underlying notion is valid.
Adjective
-
None are credible challengers; Matt Conroy is the more reasoned and moderate of the three.
-
This is a time for cool, calm and reasoned debate, and for legislators to think through the consequences of legislation put forth.
Adjective
-
The value equation was rational, transactional and easy to understand.
-
Perhaps there was a rational explanation for the man outside her apartment.
Adjective
-
Trump taking the country to war with Iran, in part at the urging of his pal Bibi — without any sensible plan, debate, sanction from Congress or consideration as to how this might hurt Americans already struggling to make ends meet.
-
Google says the update will roll out over the coming days and weeks, but updating manually is sensible and easy.
Adjective
-
After all, the material appears thoughtful, coherent and well argued.
-
Policymakers, meanwhile, control the levers that determine whether all of this remains fragmented or becomes coherent.
Adjective
-
If that underlying logic is stripped away, policymakers may feel justified in reversing these successful, health-promoting policies.
-
These are entirely justified responses to Russian strikes against our state.
Cite this Entry
“Well-founded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/well-founded. Accessed 5 Jul. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
