Try Our Apps


The Best Internet Slang


[uhn-suh b-stan-shee-ey-tid] /ˌʌn səbˈstæn ʃiˌeɪ tɪd/
not substantiated; unproved or unverified:
unsubstantiated allegations.
being without form or substance.
Origin of unsubstantiated
First recorded in 1765-75; un-1 + substantiate + -ed2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for unsubstantiated
Contemporary Examples
Historical Examples
  • As yet he could not reveal his unsubstantiated information to another.

    The Roof Tree Charles Neville Buck
  • He conscientiously avoids the vague, the doubtful, the unsubstantiated.

  • The articles seemed woven of fact, but she could not accept them unsubstantiated.

    To Him That Hath Leroy Scott
  • But he couldn't prove it, and she wasn't likely to accept his unsubstantiated word.

    Forget Me Nearly Floyd L. Wallace
  • Then follows the unsubstantiated story which has done duty for Shakspeare and many other poets.

    Robert Burns Gabriel Setoun
British Dictionary definitions for unsubstantiated


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
Cite This Source
Word Origin and History for unsubstantiated

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

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for unsubstantiated

Few English speakers likely know this word

Word Value for unsubstantiated

Scrabble Words With Friends

Nearby words for unsubstantiated