1
as in sick
temporarily suffering from a disorder of the body
an unsound horse that will have to be disqualified from the race
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in unreasonable
not using or following good reasoning
it is clearly unsound to argue that just because a scientific explanation for that phenomenon does not currently exist, no such explanation is possible
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in insane
unable to think in a clear or sensible way
disgruntled relatives tried to prove that the woman was of unsound mind when she made her will
Synonyms & Similar Words
Antonyms & Near Antonyms
4
as in erroneous
not being in agreement with what is true
an unsound and pernicious stereotype
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unsound
Under the Fed’s new rules, banks can only be tested for material risks to their businesses or balance sheets, such as bad loans or unsound business practices.
—
Christopher Rugaber, Fortune, 19 Nov. 2025
The measures have been opposed by Republicans, including the Colorado GOP, and the Independence Institute, a libertarian-leaning think tank, which has castigated the program as a financially unsound failure.
—Seth Klamann, Denver Post, 4 Nov. 2025
The club very quickly became structurally unsound.
—Chris Weatherspoon, New York Times, 3 Nov. 2025
By 1948, decades of patchwork repairs, design flaws and war damage left the mansion structurally unsound, according to the White House Historical Association.
—Jordan King, MSNBC Newsweek, 24 Oct. 2025
See All Example Sentences for unsound
Christopher Rugaber, Fortune, 19 Nov. 2025
The measures have been opposed by Republicans, including the Colorado GOP, and the Independence Institute, a libertarian-leaning think tank, which has castigated the program as a financially unsound failure.
—Seth Klamann, Denver Post, 4 Nov. 2025
The club very quickly became structurally unsound.
—Chris Weatherspoon, New York Times, 3 Nov. 2025
By 1948, decades of patchwork repairs, design flaws and war damage left the mansion structurally unsound, according to the White House Historical Association.
—Jordan King, MSNBC Newsweek, 24 Oct. 2025
See All Example Sentences for unsound
Recent Examples of Synonyms for unsound
Adjective
-
This leaves a sicker risk pool behind and drives premiums even higher for those who remain.—
U T Readers,
San Diego Union-Tribune,
9 Jan. 2026
-
Humans who have prolonged close contact with sick or dead birds infected with HPAI are the most at risk of becoming infected.—
Rick Sobey,
Boston Herald,
9 Jan. 2026
Adjective
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Importantly, the president already has full legal authority to impose tariffs when other nations’ behavior places an unreasonable burden on our economy, including through environmental negligence.—
Chip Lamarca,
Sun Sentinel,
6 Jan. 2026
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The logic was that Spirit had projected the league would grow at a rate that the league itself found unreasonable, and so would not be able to field a team while also paying Rodman.—
Louisa Thomas,
New Yorker,
4 Jan. 2026
Adjective
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His votes, like his tattoos, just weren’t insane enough anymore.—
Howie Carr,
Boston Herald,
7 Nov. 2025
-
His voice messages of songs are amazing and insane.—
Kristin Robinson,
Billboard,
6 Nov. 2025
Adjective
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Quick hits — Canales told reporters that the refs in the Panthers’ loss to the Bucs on Saturday never gave the Panthers the chance to replay a critical down after an erroneous whistle stopped it dead.—
DIAMOND VENCES,
Charlotte Observer,
5 Jan. 2026
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In Wiggins case, the court ruled the trial judge gave erroneous legal instructions to the jury.—
Stephen Swanson,
CBS News,
22 Dec. 2025
Adjective
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This involves having a poorly or non-functioning colon and is not usually reversible.—
Dr. John De Jong,
Boston Herald,
17 Aug. 2025
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The researchers and their partners are also working to track local residents’ health and to measure how well or poorly interventions like masks and household air filters protected them.—
Maggie Astor,
New York Times,
28 Mar. 2025
Adjective
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Cramer warned that these moments can feel chaotic — even irrational — but are often driven by valuation extremes finally snapping back toward equilibrium.—
Luke Fountain,
CNBC,
8 Jan. 2026
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Often, these unjustifiable fears arise simply because people draw irrational conclusions from rational concerns.—
Jody Mamone,
Hartford Courant,
2 Jan. 2026
Adjective
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However, mental health experts now warn that for a small group of vulnerable people, long and emotionally charged conversations with AI may worsen delusions or psychotic symptoms.—
Kurt Knutsson,
FOXNews.com,
5 Jan. 2026
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People with schizophrenia or schizoaffective disorder may be quiet and withdrawn for a long time, then unexpectedly slip into a psychotic episode.—
Kat McGowan,
NPR,
31 Dec. 2025
Adjective
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Minneapolis Mayor Jacob Frey rejected claims that the officer acted in self-defense, saying after viewing the video that the federal account was inaccurate, as previously noted by The Center Square.—
Center Square,
The Washington Examiner,
9 Jan. 2026
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That demeaning statement has proven both accurate and inaccurate, depending on the president’s relationship with the vice president, their skill set, experience, and political ambition.—
Myra Adams,
Washington Post,
9 Jan. 2026
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 11 Jan. 2026.
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