as in unreasonable
having no basis in reason or fact
an unsubstantiated claim that was thrown out of court
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Recent Examples of unsubstantiated
On Rogan’s show, Trump repeated unsubstantiated GOP claims that the doubts sowed about the laptop’s authenticity somehow helped President Biden’s election.
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Todd Spangler, Variety, 26 Oct. 2024
Many users are citing unsubstantiated claims about the additive's safety, with several wrongly linking Gates to the brand.
—Thomas G. Moukawsher, Newsweek, 29 Nov. 2024
At the time, the company said Trump had posted unsubstantiated claims that the 2020 presidential election had been stolen and praised increasingly violent Jan 6 insurrectionists.
—Zac Ntim, Deadline, 28 Nov. 2024
For Musk, the platform has become a useful political weapon of confusion, a machine retrofitted to poison the information environment by filling it with dangerous, false, and unsubstantiated rumors about election fraud that can reach mass audiences.
—Charlie Warzel, The Atlantic, 30 Oct. 2024
See all Example Sentences for unsubstantiated 
Todd Spangler, Variety, 26 Oct. 2024
Many users are citing unsubstantiated claims about the additive's safety, with several wrongly linking Gates to the brand.
—Thomas G. Moukawsher, Newsweek, 29 Nov. 2024
At the time, the company said Trump had posted unsubstantiated claims that the 2020 presidential election had been stolen and praised increasingly violent Jan 6 insurrectionists.
—Zac Ntim, Deadline, 28 Nov. 2024
For Musk, the platform has become a useful political weapon of confusion, a machine retrofitted to poison the information environment by filling it with dangerous, false, and unsubstantiated rumors about election fraud that can reach mass audiences.
—Charlie Warzel, The Atlantic, 30 Oct. 2024
See all Example Sentences for unsubstantiated
Recent Examples of Synonyms for unsubstantiated
Adjective
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Left in the dust ‘Cruise’ driverless robot taxis are seen at a parking lot as California Department of Motor Vehicles (DMV) revokes its self-driving car permit and citing ‘unreasonable risk to public safety’ in San Francisco, California, USA on October 24, 2023.Kristian Burt, CNBC, 11 Dec. 2024
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To determine whether those amounts posed an unreasonable risk of harm, the agency compared them to a specific benchmark — the highest concentration of formaldehyde measured by government monitors in outdoor air between 2015 and 2020.Sharon Lerner and Al Shaw, CNN, 5 Dec. 2024
Adjective
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Attorneys for the popular restaurant contend that the city’s decision to rescind the permit was unfounded, said Benjamin Reznik, an attorney representing Nobu.Salvador Hernandez, Los Angeles Times, 21 Dec. 2024
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These unfounded attacks on vaccines pose serious threats to public health, risking the spread of preventable diseases and misinformation.Catherine Tan, TIME, 20 Dec. 2024
Adjective
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In their calculation, their chances of reversing vaccine injury with unsupported, experimental treatments are better than convincing policy makers to care for disabled people.Catherine Tan, TIME, 20 Dec. 2024
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The notion that sports betting leads to widespread financial hardship is unsupported by evidence.Thomas G. Moukawsher, Newsweek, 12 Dec. 2024
Articles Related to unsubstantiated
Thesaurus Entries Near unsubstantiated
Cite this Entry
“Unsubstantiated.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsubstantiated. Accessed 30 Dec. 2024.
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