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
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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
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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
The logic behind Liam Rosenior’s shift to a back five at Brighton & Hove Albion on Tuesday was not entirely unsound.
—
Conor O'Neill,
New York Times,
22 Apr. 2026
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.
—
ABC News,
2 Apr. 2026
This not only makes the shade problem worse, Chamberlain says, but makes the tree more structurally unsound and vulnerable to damage in harsh weather conditions.
—
Peg Aloi,
The Spruce,
30 Mar. 2026
Named the David Geffen Galleries in recognition of the billionaire’s $150 million donation toward the $720 million effort, the concrete building replaces four others that were deemed structurally unsound.
—
Julie Belcove,
Robb Report,
15 Mar. 2026
See All Example Sentences for unsound
Conor O'Neill,
New York Times,
22 Apr. 2026
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.
—
ABC News,
2 Apr. 2026
This not only makes the shade problem worse, Chamberlain says, but makes the tree more structurally unsound and vulnerable to damage in harsh weather conditions.
—
Peg Aloi,
The Spruce,
30 Mar. 2026
Named the David Geffen Galleries in recognition of the billionaire’s $150 million donation toward the $720 million effort, the concrete building replaces four others that were deemed structurally unsound.
—
Julie Belcove,
Robb Report,
15 Mar. 2026
See All Example Sentences for unsound
Recent Examples of Synonyms for unsound
Adjective
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Having a sick pet is emotionally a lot to handle.
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Preventing infestation Just because one calf is sick doesn’t mean the entire herd will get it, Cammack said.
Adjective
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According to the Aspen Institute, Norwegian leagues don’t keep score or track standings until the kids are 11 years old, which goes a long way toward eliminating many of the unreasonable pressures that developing athletes often experience in more hyper-competitive environments.
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Luca thinks Marcus is being unreasonable by adding a new ingredient to their dessert at the last minute and by asking Chester to run an errand in awful conditions.
Adjective
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The Lenovo ThinkBook 16 Gen 8 laptop shows up ready to work with a snappy Intel Core Ultra 7 processor, insane 32GB of RAM, and spacious 2TB SSD in its (figurative) briefcase.
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Eventually, though, Lestat breaks, coming clean about his tumultuous past with first lover Nicolas de Lenfent (Joseph Potter), who went insane after being attacked by Armand (Assad Zaman) in Paris in the late 18th century.
Adjective
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Although Rodman’s research shows that generative AI can help diagnose rare diseases or make sense of unusual symptoms, a randomized trial that was published in NEJM AI just the week before found that intentionally erroneous output from an AI model can easily lead doctors astray.
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The good news is, though, that while an erroneous freeze can cause big trouble with your bills, it can usually be reversed.
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.
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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.
Adjective
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Economist Hyman Minsky spent his career explaining how irrational behavior produces fragility and instability in capitalist systems.
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McClanahan has been close enough to his usual production, but without an irrational need for perfection.
Adjective
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The defense argued that Bland had a psychotic episode due to a COVID infection.
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The experience in question was a psychotic break that Murray endured in 2017 after spending several months involved with a wellness cult, coming to believe herself capable of powerful healing abilities.
Adjective
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This commonly results from inaccurate color representation, poor fit or discrepancies between the physical item and its depiction on the website.
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Choi said McGee would use terminology that could have swayed a jury and sometimes provided an inaccurate window for a time of death.
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 28 Jun. 2026.
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