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

The classical compute needed to interpret the error data—called the syndrome—of a logical qubit is substantial.

— ArsTechnica, ArsTechnica, 5 Aug. 2026
Then Saturday, a deluge of rain in the afternoon forced Mayor James Dodge to make the logical but still tough, call to cancel the second day of 23rd running of the Taste of Orland Park.

— Jeff Vorva, Chicago Tribune, 3 Aug. 2026

Definition of logical

Adjective

Therefore, Tunick remains presumed innocent unless prosecutors prove the charge beyond a reasonable doubt.

— Kurt Knutsson, FOXNews.com, 9 Aug. 2026
Since the State could not disprove the justification defense beyond a reasonable doubt, the evidence resulted in the decision that no criminal charges would be filed against the fast-food employees.

— Desiree Anello, PEOPLE, 9 Aug. 2026

Definition of reasonable

Adjective

There are many valid readings of this high-minded, heavy-handed modern drama of despair, desperation, love and survival instincts.

— Christopher Arnott, Hartford Courant, 10 Aug. 2026
All three of the upgrades include a fix for a bug in Screen Sharing, which could allow an attacker on the network to authenticate to Screen Sharing without the need for valid credentials.

— Kate O'Flaherty, Forbes.com, 9 Aug. 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

Her mental health afterward Two forensic psychiatrists testified Monday that Clancy appeared clear-headed and rational in the days after the killings.

— Andi Babineau, CNN Money, 8 Aug. 2026
Employers must move beyond resilience training, creating transparent, equitable workplaces where effort is rewarded and mistakes are tolerated, ensuring ambition remains a rational choice for diverse talent.

— Nancy Doyle, Forbes.com, 7 Aug. 2026

Definition of rational

Adjective

Every one of those simplifications is sensible for a proof of concept.

— Leon Gordon, Forbes.com, 7 Aug. 2026
The Naturalizer Brie Sandals are a perfect day-to-night pick, thanks to their sensible block heel, strappy leather uppers, and signature contoured footbed.

— Sophie Dodd, Travel + Leisure, 5 Aug. 2026

Definition of sensible

Adjective

Maintaining a coherent strategy across a sprawling national security bureaucracy becomes more difficult over the course of a long conflict.

— Dafna H. Rand, Foreign Affairs, 4 Aug. 2026
Characters must be coherent; plots must be tight and any gaps in the plot must be patched.

— Sabrina Jaszi, The Dial, 4 Aug. 2026

Definition of coherent

Adjective

Different fandoms may debate whether the shots fired there are justified, but Bridgers is kind of taking one at herself here, too, amid all the no-love-lost.

— Chris Willman, Variety, 9 Aug. 2026
Despite the reforms, the NYPD’s federal monitor has repeatedly said that even when officers conduct a legally justified stop, the subsequent frisk or more invasive search is too often not justified.

— Colin Mixson, New York Daily News, 7 Aug. 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 10 Aug. 2026.

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Synonyms of well-founded

adjective

Example Sentences

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