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
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Following the logical evidence feels like Detective 101, but their boss is gunning for an arrest so Gonzales gives in to Baxter’s impulse.
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Under this framework, participating engineering teams must successfully demonstrate operational quantum hardware that utilizes a specific range of low-hundreds logical qubits before the 2028 deadline.
Adjective
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This is worth remembering amid perhaps reasonable excitement about the World Cup.
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Fortunately, this month New York’s Legislature passed the bipartisan Responsible Data Center Development Act placing a 1-year moratorium on data center development while reasonable safeguards are created.
Adjective
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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.
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Yet amidst the hype, scientists working in the aging field are broadly in agreement that the underlying notion is valid.
Adjective
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None are credible challengers; Matt Conroy is the more reasoned and moderate of the three.
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This is a time for cool, calm and reasoned debate, and for legislators to think through the consequences of legislation put forth.
Adjective
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Forced Selling Creates Market Mispricing The market is not a rational machine.
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If Iran’s rulers are so rational and nice, one wonders why their potential acquisition of a nuclear weapon would so concern the United States.
Adjective
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Whatever the case, your approach will be doable and sensible.
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Any sensible person wants a diversified portfolio.
Adjective
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Rather than sending more operational details to the board, reporting should give executive management an accurate, comprehensive and coherent view of risk exposure across the organization.
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The ultimate challenge is assembling those individuals into a coherent, victorious team.
Adjective
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For all of the justified concern over the potential for AI to automate work, the rise of AI babysitting points to how the technology is already changing jobs.
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True, the university’s effort to unload the property sparked a backlash that proved justified.
Cite this Entry
“Well-founded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/well-founded. Accessed 25 Jun. 2026.
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