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
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of unsound
But Crenshaw dismissed that argument as both self-inflicted and legally unsound.
—
Billal Rahman, MSNBC Newsweek, 26 June 2025
But don’t get too attached to any of these morally unsound characters, since all are mere bait for this killer.
—Randy Myers, Mercury News, 20 June 2025
The approach that the Great Barrington Declaration laid out was, at the time, widely denounced by public-health experts, including the World Health Organization and then–NIH director Francis Collins, as dangerous and scientifically unsound.
—Katherine J. Wu, The Atlantic, 9 June 2025
And now, the scientifically unsound political campaign against water fluoridation is another example of an anti-pediatric fringe initiative to dismantle a public health success.
—Scott A. Rivkees, Time, 6 May 2025
See All Example Sentences for unsound
Billal Rahman, MSNBC Newsweek, 26 June 2025
But don’t get too attached to any of these morally unsound characters, since all are mere bait for this killer.
—Randy Myers, Mercury News, 20 June 2025
The approach that the Great Barrington Declaration laid out was, at the time, widely denounced by public-health experts, including the World Health Organization and then–NIH director Francis Collins, as dangerous and scientifically unsound.
—Katherine J. Wu, The Atlantic, 9 June 2025
And now, the scientifically unsound political campaign against water fluoridation is another example of an anti-pediatric fringe initiative to dismantle a public health success.
—Scott A. Rivkees, Time, 6 May 2025
See All Example Sentences for unsound
Recent Examples of Synonyms for unsound
Adjective
-
But as that incident demonstrated, even a small number of controllers calling in sick can have a big impact.—
Joel Rose,
NPR,
2 Oct. 2025
-
Austin Hedges gets sick to his stomach before postseason games.—
Zack Meisel,
New York Times,
2 Oct. 2025
Adjective
-
Republicans argue that Democrats are making unreasonable demands on a stopgap bill that historically has served as a narrow, short-term bridge.—
Nik Popli,
Time,
29 Sep. 2025
-
Vice President Vance, meanwhile, accused Democrats of making unreasonable demands.—
The Hill staff,
The Hill,
29 Sep. 2025
Adjective
-
Continue reading … ORWELL NIGHTMARE – Joe Rogan blasts 'insane' media silence on arrests for social media posts.—
,
FOXNews.com,
2 Oct. 2025
-
The queen greeted this insane question with a politely regal stare, ignored my faux pas, and continued talking about financial inclusion.—
Ben Smith,
semafor.com,
29 Sep. 2025
Adjective
-
Vedra and other debt law experts said a high rate of default judgments indicates a system that favors the pursuers over the pursued — and increases the chances someone will be harmed by an erroneous bill.—
Rae Ellen Bichell,
Fortune,
29 Sep. 2025
-
And in 2010’s Flash Crash, algorithmic trading bots created a feedback loop of erroneous trades, wiping out nearly $1 trillion in market value in minutes.—
Steve Booren,
Denver Post,
21 Sep. 2025
Adjective
-
This involves having a poorly or non-functioning colon and is not usually reversible.—
Dr. John De Jong,
Boston Herald,
17 Aug. 2025
-
The researchers and their partners are also working to track local residents’ health and to measure how well or poorly interventions like masks and household air filters protected them.—
Maggie Astor,
New York Times,
28 Mar. 2025
Adjective
-
Jim Edwards InvestingMarkets Back in the ’90s a Fed chief warned about ‘irrational exuberance’ in the markets.—
Geoff Colvin,
Fortune,
30 Sep. 2025
-
Those poor scientists – their federal funding has been taken away, their research programs scrapped, and their rigorous scientific findings ignored in favor of one man’s irrational, uninformed opinion.—
Rafael Perez,
Oc Register,
25 Sep. 2025
Adjective
-
Names and backstories are different, but in Pynchon’s text, stoner pianist Zoyd Wheeler is taking odd jobs and government disability checks obtained by staging regular psychotic episodes, when federal agent Brock Vond drives him and his 14-year-old daughter Prairie from their home.—
Rory Doherty,
Time,
26 Sep. 2025
-
Lockjaw is Bob's psychotic, longtime nemesis, who is obsessed with finding him and his daughter.—
Lauren Huff,
Entertainment Weekly,
26 Sep. 2025
Adjective
-
At the same time, social media sleuths shared inaccurate information and a man was detained after allegedly trying to drive through a barricade near the church.—
Dave Boucher,
Freep.com,
29 Sep. 2025
-
Others were related to the actual content of the courses, such as a school that used a curriculum that included inaccurate information about permissible blood-alcohol levels for drivers and another school that provided students with answers to final exam questions in advance.—
William Melhado,
Sacbee.com,
26 Sep. 2025
Cite this Entry
“Unsound.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsound. Accessed 6 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share