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Synonyms

unsubstantiated

American  
[uhn-suhb-stan-shee-ey-tid] / ˌʌn səbˈstæn ʃiˌeɪ tɪd /

adjective

  1. not substantiated; unproved or unverified.

    unsubstantiated allegations.

  2. being without form or substance.


unsubstantiated British  
/ ˌʌnsəbˈstænʃɪˌeɪtɪd /

adjective

  1. not established as valid or genuine

    unsubstantiated 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

Etymology

Origin of unsubstantiated

First recorded in 1765–75; un- 1 + substantiate + -ed 2

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.

She is also in a quarrel with Erika Kirk over unsubstantiated claims of a conspiracy involving the US and Israeli governments in the killing of her husband.

From Barron's

South Africa's home affairs department described these accusations as "unsubstantiated".

From BBC

Paul's fights are frequently accompanied by unsubstantiated claims they are "scripted".

From BBC

As this new book is released, the autism community is also grappling with another controversy: the unsubstantiated assertion by Kennedy that Tylenol use by pregnant women poses an increased risk of autism.

From Salon

The assessment that “the evidence of abuse by the reservists appears weak” is unsubstantiated, as is Mr. Bell’s harsh accusation that military prosecutors wrongly indict Israeli soldiers to appease the Jewish state’s critics.

From The Wall Street Journal