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
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unsound
Public health experts say both moves are scientifically unsound and would essentially upend the nation's childhood vaccination regimen, leaving children vulnerable to diseases that had long been brought under control.
—
NPR, 20 Nov. 2025
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 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
NPR, 20 Nov. 2025
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 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
-
The rest of us will sit here with Belichick, sick to our stomachs.—
Dave Hyde,
Sun Sentinel,
26 Jan. 2026
-
Now, the fear is getting sick or stuck far from home.—
Christopher Elliott,
Forbes.com,
24 Jan. 2026
Adjective
-
Asked if the White House opposes splitting up the bills, a second White House official dismissed Democratic demands for DHS changes as unreasonable rather than addressing that question.—
Burgess Everett,
semafor.com,
28 Jan. 2026
-
At the same time, protections against unreasonable searches and seizures must be honored; law enforcement should not bypass judicial oversight when entering private homes or conducting operations.—
Eric Balliet,
Denver Post,
28 Jan. 2026
Adjective
-
And there’s Harrison Ford, which is insane.—
Senior Television,
Los Angeles Times,
28 Jan. 2026
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But that’s an indictment of our insane world, not Roher’s filmmaking.—
Christian Zilko,
IndieWire,
27 Jan. 2026
Adjective
-
That’s an extra $1,780 or so purely because the IRS concluded the erroneous position was intentional rather than mistaken.—
Kelly Phillips Erb,
Forbes.com,
26 Jan. 2026
-
How to opt out Incorporating AI directly into Gmail could pose risks for Google, given that large language models can sometimes present erroneous or misleading information.—
Julia Doyle,
CBS News,
8 Jan. 2026
Adjective
-
This fragmented model creates friction and quietly drains profitability through unbilled hours, margin erosion from poorly staffed projects and elevated turnover when top talent hits operational roadblocks.—
DJ Paoni,
Forbes.com,
10 Sep. 2025
-
For however poorly things are going — and the bad tone set by the starters has leaked into some defensive lapses and some pressing at the plate — the Padres got themselves into a really favorable position before this.—
Kevin Acee,
San Diego Union-Tribune,
4 Sep. 2025
Adjective
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Tempering the not-so-irrational fears out there about AI replacing human workers, Jensen offered a more optimistic view.—
Zev Fima,
CNBC,
21 Jan. 2026
-
In that space, intuition, which was once dismissed as irrational or unreliable, has started to re-enter the conversation.—
William Jones
January 21,
Miami Herald,
21 Jan. 2026
Adjective
-
But providers might not have enough information available to make a correct diagnosis; an emergency room doctor treating someone experiencing a psychotic episode likely doesn’t have the capacity to know if their diagnosis should be schizophrenia, bipolar I or something else.—
Allison Parshall,
Scientific American,
28 Jan. 2026
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Is this lucid state only temporary based on the recent anti-psychotic meds he was given by Kelson?—
Brian Davids,
HollywoodReporter,
20 Jan. 2026
Adjective
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What with its Charli xcx soundtrack and historically inaccurate latex costumes, Emily Brontë purists may opt to swerve a Valentine’s weekend viewing slot.—
Olivia Allen,
Vogue,
27 Jan. 2026
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And those traditional soil tests use acids to extract phosphorus from the soil, delivering inaccurate findings of how much phosphorus plants can actually access.—
Dinesh Phuyal,
The Conversation,
26 Jan. 2026
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 3 Feb. 2026.
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