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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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 becomes alarmingly evident through the key assumptions check is how many of the current responses expect a quick resolution of the conflict — a supposition that is unsound, or at least unsupported.
—
Judd Devermont,
semafor.com,
27 Apr. 2026
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
See All Example Sentences for unsound
Judd Devermont,
semafor.com,
27 Apr. 2026
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
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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If these requirements are not met, the search is unreasonable and therefore unlawful, and evidence obtained in that search cannot be used in court, barring a good-faith exception.
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Justices ruled that sweeping use of cellphone data requires a warrant, a decision applying the Fourth Amendment, which protects against unreasonable searches and seizures, to new technology.
Adjective
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For example, Fred Again is absolutely doing insane things with the MPC Lives.
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That dwarfs anything the powerhouse Spain teams did in the early 2010s, when the team was known for stringing together an insane number of passes that led to a goal.
Adjective
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In addition, the trial judge gave the jury erroneous instructions, the appeals court ruled.
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But such fine evidence of the erroneous human touch in the publishing process is, of course, cherished by collectors of this day.
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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The reflex, from a distance, is to call this irrational.
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If people believe regulatory caution invalidates every legal claim, courts may look irrational.
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 2 Jul. 2026.
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