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
What is deeply concerning is that the District Attorney is choosing to proceed on a case that is fundamentally unsound and cannot be proven at trial.
—
Jennifer Watts, ABC News, 6 Feb. 2026
Colton was wrong, but his process wasn’t altogether unsound.
—Joe Reid, Vulture, 16 Jan. 2026
The Badgers ran for 209 yards and three scores against the Illini, while an unsound Gophers defense gave up 220 and two TDs to the Wildcats.
—Andy Greder, Twin Cities, 28 Nov. 2025
But on closer look, the table also shows that any such relationship disappears at higher doses of aluminum—a quirky finding that should make the whole idea appear unsound.
—Benjamin Mazer, The Atlantic, 21 Nov. 2025
See All Example Sentences for unsound
Jennifer Watts, ABC News, 6 Feb. 2026
Colton was wrong, but his process wasn’t altogether unsound.
—Joe Reid, Vulture, 16 Jan. 2026
The Badgers ran for 209 yards and three scores against the Illini, while an unsound Gophers defense gave up 220 and two TDs to the Wildcats.
—Andy Greder, Twin Cities, 28 Nov. 2025
But on closer look, the table also shows that any such relationship disappears at higher doses of aluminum—a quirky finding that should make the whole idea appear unsound.
—Benjamin Mazer, The Atlantic, 21 Nov. 2025
See All Example Sentences for unsound
Recent Examples of Synonyms for unsound
Adjective
-
The indictment says one customer paid $10,000 in vet bills after buying sick German Shepherds.—
J.D. Miles,
CBS News,
24 Mar. 2026
-
The move comes as air travelers are experiencing longer security lines and a growing number of TSA agents are quitting or calling in sick.—
Brittney Melton,
NPR,
23 Mar. 2026
Adjective
-
As in Williams’ case, attorneys argued that a sweep had violated the plaintiffs’ Fourth Amendment rights protecting them from unreasonable search and seizure, as well as their 14th Amendment right to due process.—
Ariane Lange,
Sacbee.com,
24 Mar. 2026
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Because that is ultimately what The Secret Garden is about—the stubborn, almost unreasonable insistence of living things to grow toward the light.—
Literary Hub,
Literary Hub,
23 Mar. 2026
Adjective
-
If he was convicted, a jury would then have to decide whether Abril was insane when the park shooting occurred.—
Rosalio Ahumada,
Sacbee.com,
26 Mar. 2026
-
And the culture is happily playing along in the name of this insane thirst of Stan culture to have something on the other side.—
Jem Aswad,
Variety,
24 Mar. 2026
Adjective
-
The stalemate stems from Democrats’ insistence on immigration-enforcement reform — particularly, the cruel and often erroneous enforcement that is sending shockwaves of fear throughout immigrant populations and even distressing American-citizen residents of Puerto Rico.—
Orlando Sentinel Editorial Board,
The Orlando Sentinel,
21 Mar. 2026
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Dodgers infielder Miguel Rojas addressed an erroneous report from earlier in the week with understanding while also making his feelings clear.—
Maddie Lee,
Los Angeles Times,
18 Mar. 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
-
Though the process of how it is utilized can be debated, having emergency stocks of a vital resource subject to supply crises can hardly be called irrational.—
Scott L. Montgomery,
The Conversation,
23 Mar. 2026
-
My greatest irrational fear was that the machine might squeeze far tighter than necessary and I’d just be stuck there in immense pain until someone unplugged the cord.—
Zachary Bernstein,
Los Angeles Times,
17 Mar. 2026
Adjective
-
The prescriptions for the anti-psychotic medications Nelson required twice daily were slow to be filled and forgotten on a desk in a corporate office.—
Teri Sforza,
Oc Register,
27 Mar. 2026
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After inheriting her childhood home, an unsuspecting woman becomes the object of her psychotic neighbor’s obsession, spiraling her down a violent path of stalking and possession that can only lead her to an extremely bloody Christmas.—
William Earl,
Variety,
25 Mar. 2026
Adjective
-
Officials say this report was inaccurate.—
Patrick Damp,
CBS News,
22 Mar. 2026
-
Ursula has a big-picture understanding of the way the world works that’s cynical if not entirely inaccurate.—
Louis Peitzman,
Vulture,
20 Mar. 2026
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 31 Mar. 2026.
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