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unsourced

British  
/ ʌnˈsɔːst /

adjective

  1. (of a story or quotation) not attributed to a source

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Chief among them were unsourced claims that the PS5 Pro would be backwards compatible with games from previous Sony consoles - with some reports suggesting this would go as far back as the original PlayStation.

From BBC

Sleepin’ on Gems isn’t the only account boosting incorrect dates and unsourced info either.

From Slate

"Everything is fine with him, this is absolutely another fake," Kremlin spokesman Dmitry Peskov said when asked about an unsourced report by a Russian Telegram channel, picked up by some Western media, that the president had suffered a serious health episode on Sunday evening.

From Reuters

He called the Times article “unsourced” but did not deny its findings, adding, “To the extent The New York Times wrote an article suggesting certain things, it is what it is.”

From New York Times

“The story, which is riddled with patently false anecdotes and no concrete evidence, is entirely based on unsourced, unsubstantiated, 15-year-old anonymous gossip,” the representative said Wednesday in a statement to The Times.

From Los Angeles Times