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
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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
But don’t get too attached to any of these morally unsound characters, since all are mere bait for this killer.
—
Randy Myers, Mercury News, 20 June 2025
The approach that the Great Barrington Declaration laid out was, at the time, widely denounced by public-health experts, including the World Health Organization and then–NIH director Francis Collins, as dangerous and scientifically unsound.
—Katherine J. Wu, The Atlantic, 9 June 2025
And now, the scientifically unsound political campaign against water fluoridation is another example of an anti-pediatric fringe initiative to dismantle a public health success.
—Scott A. Rivkees, Time, 6 May 2025
At the heart of this problem lies the influence of vocal anti-vaccine rhetoric that is not only scientifically unsound but also profoundly irresponsible.
—Amar Duggirala, Baltimore Sun, 23 Apr. 2025
See All Example Sentences for unsound
Randy Myers, Mercury News, 20 June 2025
The approach that the Great Barrington Declaration laid out was, at the time, widely denounced by public-health experts, including the World Health Organization and then–NIH director Francis Collins, as dangerous and scientifically unsound.
—Katherine J. Wu, The Atlantic, 9 June 2025
And now, the scientifically unsound political campaign against water fluoridation is another example of an anti-pediatric fringe initiative to dismantle a public health success.
—Scott A. Rivkees, Time, 6 May 2025
At the heart of this problem lies the influence of vocal anti-vaccine rhetoric that is not only scientifically unsound but also profoundly irresponsible.
—Amar Duggirala, Baltimore Sun, 23 Apr. 2025
See All Example Sentences for unsound
Recent Examples of Synonyms for unsound
Adjective
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But many Americans who don't meet the new criteria do still want to get vaccinated to avoid getting sick or spreading the virus to vulnerable family members.—
Rob Stein,
NPR,
11 Sep. 2025
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Harry, who served in the British Armed Forces for 10 years, launched The Invictus Games in London in 2014 to honor active duty and veteran service members who have been wounded, injured or sick on the job.—
Edward Segarra,
USA Today,
11 Sep. 2025
Adjective
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We're protected from unreasonable searches and seizures.—
Adeola Adeosun,
MSNBC Newsweek,
9 Sep. 2025
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This is a crude and unreasonable attempt to make the discussion into an all-or-nothing affair.—
Lance Eliot,
Forbes.com,
7 Sep. 2025
Adjective
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Stines’ defense attorneys, Jeremy and Kerri Bartley, say the sheriff was insane at the time of the killing and want his full mental health report – which is currently sealed – released to the public.—
Andy Rose,
CNN Money,
6 Sep. 2025
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Making straight men insane comes with the territory on one of TV’s most-talked about shows of the last five years (House of the Dragon continues to rack up toward 10 million viewers per ep).—
Lily Ford,
HollywoodReporter,
5 Sep. 2025
Adjective
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Lauber ruled that discounted cash flow valuation of land is erroneous as a matter of law.—
Peter J Reilly,
Forbes.com,
29 Aug. 2025
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One subject of a Raffi Khatchadourian piece complained that multiple details about his life were made up and demanded to know what idiot had given Khatchadourian the erroneous details.—
Zach Helfand,
New Yorker,
25 Aug. 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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Losing Fed independence is like giving free rein to emotional, irrational decision making.—
Hersh Shefrin,
Forbes.com,
8 Sep. 2025
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Maura’s performance makes Maria Angeles so magnetic and eccentric — earthily practical on some matters, dizzily irrational on others, and sympathetically true to herself on all fronts — that all the film’s other players want for detail and texture by comparison.—
Guy Lodge,
Variety,
4 Sep. 2025
Adjective
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Brown's attorneys had said Brown could at times appear psychotic.—
Kevin Grasha,
Cincinnati Enquirer,
5 Sep. 2025
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Psychologists and psychiatrists are scrambling to better understand how use of chatbots can fuel delusions and drive psychotic episodes.—
Amy Feldman,
Forbes.com,
3 Sep. 2025
Adjective
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Apple had to claw back key features, including its (very funny but very inaccurate) text message and news app summaries.—
Allison Morrow,
CNN Money,
10 Sep. 2025
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The agent’s outputs could be inaccurate, irrelevant or even risky, negatively impacting ROI.—
Manosiz Bhattacharyya,
Forbes.com,
8 Sep. 2025
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 12 Sep. 2025.
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