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
After Hegseth’s announcement, Anthropic said in a statement that the designation would be legally unsound and set a dangerous precedent for companies that negotiate with the government.
—
Jack Queen, USA Today, 9 Mar. 2026
Firefighters went to the pier, which was closed in late 2024 after it was deemed structurally unsound, and found a section smoldering underneath.
—David Hernandez, San Francisco Chronicle, 1 Mar. 2026
Analysts and economists responded throughout the week that the economics implied by Citrini’s argument were unsound, but on Thursday, Twitter co-founder and current Block CEO Jack Dorsey stunned the market by announcing a massive 40% downsizing of his company’s ranks.
—Nick Lichtenberg, Fortune, 28 Feb. 2026
Colton was wrong, but his process wasn’t altogether unsound.
—Joe Reid, Vulture, 16 Jan. 2026
See All Example Sentences for unsound
Jack Queen, USA Today, 9 Mar. 2026
Firefighters went to the pier, which was closed in late 2024 after it was deemed structurally unsound, and found a section smoldering underneath.
—David Hernandez, San Francisco Chronicle, 1 Mar. 2026
Analysts and economists responded throughout the week that the economics implied by Citrini’s argument were unsound, but on Thursday, Twitter co-founder and current Block CEO Jack Dorsey stunned the market by announcing a massive 40% downsizing of his company’s ranks.
—Nick Lichtenberg, Fortune, 28 Feb. 2026
Colton was wrong, but his process wasn’t altogether unsound.
—Joe Reid, Vulture, 16 Jan. 2026
See All Example Sentences for unsound
Recent Examples of Synonyms for unsound
Adjective
-
Young children, older adults and people with weakened immune systems are most likely to get sick from these germs.—
Jonel Aleccia,
Chicago Tribune,
27 Apr. 2026
-
The researchers also hope to test the protocol earlier in pregnancy, before a pregnant person gets seriously sick.—
Jackie Flynn Mogensen,
Scientific American,
27 Apr. 2026
Adjective
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Gill's decision came after Scott's lawyer requested to suspend the trial on the grounds that the grandparents had not met the state statute requiring them to prove Scott's decision to keep them from seeing Laila was unreasonable.—
Juliet Pennington,
PEOPLE,
24 Apr. 2026
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Keirans, 59, argued the 144-month prison term was unreasonable and that special conditions of supervised release were improper.—
CBS News,
CBS News,
24 Apr. 2026
Adjective
-
Bringing his bag of insane tricks and witty banter to the Wilshire Ebell Theatre for two nights on May 8 and 9, Willman’s crowd work, storytelling and intricate tricks are inspired by everyday life.—
Los Angeles Times,
Los Angeles Times,
29 Apr. 2026
-
Just this insane profanity-laden tirade that went on and on and on.—
Literary Hub,
Literary Hub,
29 Apr. 2026
Adjective
-
Who never bothered to delete the erroneous post.—
Joe Rexrode,
New York Times,
27 Apr. 2026
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Then, in 2005, the Texas First Court of Appeals overturned Yates’ conviction after finding the forensic psychiatrist who testified for the prosecution gave erroneous testimony that may have prejudiced the jury.—
Chelsea Bailey,
CNN Money,
22 Apr. 2026
Adjective
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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
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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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Surveys show a 50-50 divide, but Trump’s real base is his same irrational 30%.—
Sun Sentinel Editorial Board,
Sun Sentinel,
24 Apr. 2026
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Letting Jinx stay is yet another act of irrational love from Margo.—
Erin Qualey,
Vulture,
15 Apr. 2026
Adjective
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Netflix’s bracingly nasty action-thriller Apex is a fine addition, plonking the star down in a rugged Australian landscape and throwing nature’s formidable might at her while stirring a psychotic serial killer into the mix.—
David Rooney,
HollywoodReporter,
23 Apr. 2026
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The risk of a psychotic disorder rose fourfold when highly potent weed was used daily, the study found.—
Sandee LaMotte,
CNN Money,
20 Apr. 2026
Adjective
-
Ernie Dosio’s Family Breaks Their Silence According to Dosio’s ex-wife, Rinda Butler Dosio, the family initially received inconsistent and sometimes inaccurate information.—
Ryan Brennan
April 28,
Kansas City Star,
28 Apr. 2026
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Retailers are charging people based on guesses, and those guesses are frequently inaccurate.—
Kurt Knutsson,
FOXNews.com,
27 Apr. 2026
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 2 May. 2026.
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