unsubstantiated

[ uhn-suh b-stan-shee-ey-tid ]

/ ˌʌn səbˈstæn ʃiˌeɪ tɪd /

SEE MORE SYNONYMS FOR unsubstantiated ON THESAURUS.COM

adjective

not substantiated; unproved or unverified: unsubstantiated allegations.

being without form or substance.

Nearby words

unstudied, unsub, unsubscribe, unsubsidized, unsubstantial, unsubstantiated, unsubtle, unsuccess, unsuccessful, unsuitable, unsuited

Origin of unsubstantiated

First recorded in 1765–75; un-¹ + substantiate + -ed²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unsubstantiated

One commenter wrote that this unsubstantiated rumor clearly meant that “Rihanna had what was coming to her.”
Why We're So Hard on Janay Rice and Celebrity Survivors of Abuse|Amy Zimmerman|September 15, 2014|DAILY BEAST
This in no way changes the fact that Bryan Singer is innocent of these unsubstantiated lies.
Bryan Singer Agreed to Settle Sex Abuse Lawsuit for $100,000, but Insists He’s Innocent|Tim Teeman|July 29, 2014|DAILY BEAST
This is just the latest example of contradictory and unsubstantiated information from unnamed sources leaking from Kuala Lumpur.
Who Gagged the Search for MH370?|Clive Irving|June 22, 2014|DAILY BEAST
“Whispers” in this case, means “unsubstantiated and probably made up rumors.”
Solange Is Blue Ivy’s Mom and Other Crazy Conspiracy Theories|Kevin Fallon|May 15, 2014|DAILY BEAST

An unsubstantiated survey reports that 15.1 million of them are still shocked that Jeff Daniels won.
Emmy Awards Score Ratings High, Jon Hamm May Undergo Surgery|Culture Team|September 23, 2013|DAILY BEAST
He conscientiously avoids the vague, the doubtful, the unsubstantiated.
Appletons' Popular Science Monthly, May, 1900|Various
Criticism and comment on well-known and admitted facts are very different things from the assertion of unsubstantiated facts.
A Public Appeal for Redress to the Corporation and Overseers of Harvard University|Francis Ellingwood Abbot
The referee challenges the therapeutic claims on the basis that they are extravagant and unsubstantiated.
The Propaganda for Reform in Proprietary Medicines, Vol. 1 of 2|Various
Then follows the unsubstantiated story which has done duty for Shakspeare and many other poets.
Robert Burns|Gabriel Setoun
He failed to winnow the sound historical material from that which was unsubstantiated or improbable.
The Northmen, Columbus and Cabot, 985-1503|Various

British Dictionary definitions for unsubstantiated

unsubstantiated

/ (ˌʌnsəbˈstænʃɪˌeɪtɪd) /

adjective

not established as valid or genuineunsubstantiated allegations

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unsubstantiated

unsubstantiated

adj.

1775, from un- (1) "not" + past participle of substantiate (v.).

unsubstantiated

adjective

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Origin of unsubstantiated

Examples from the Web for unsubstantiated

British Dictionary definitions for unsubstantiated

unsubstantiated

adjective

Word Origin and History for unsubstantiated

unsubstantiated