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[suh b-stan-shee-eyt] /səbˈstæn ʃiˌeɪt/
verb (used with object), substantiated, substantiating.
to establish by proof or competent evidence:
to substantiate a charge.
to give substantial existence to:
to substantiate an idea through action.
to affirm as having substance; give body to; strengthen:
to substantiate a friendship.
Origin of substantiate
1650-60; < New Latin substantiātus (past participle of substantiāre), equivalent to Latin substanti(a) substance + -ātus -ate1
Related forms
substantiatable, adjective
substantiation, noun
substantiative, adjective
substantiator, noun
nonsubstantiation, noun
resubstantiate, verb (used with object), resubstantiated, resubstantiating.
resubstantiation, noun
unsubstantiatable, adjective
1. prove, confirm, verify, validate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for substantiate
Contemporary Examples
Historical Examples
  • How could Mr. Ferris substantiate by proof any of the damaging allegations he had made against publishers of high standing?

    A Fortnight of Folly Maurice Thompson
  • Now here is a fact which official records go to substantiate.

    Bones Edgar Wallace
  • Well, the only thing that looks that way is a story that nobody has been able to substantiate.

    Out of the Ashes Ethel Watts Mumford
  • Then he would do so for me and bring proofs to substantiate his statements.

    The Millionaire Baby Anna Katharine Green
  • As we have hinted at the strength of his memory, we will now produce some facts to substantiate the truth.

British Dictionary definitions for substantiate


verb (transitive)
to establish as valid or genuine
to give form or real existence to
Derived Forms
substantiation, noun
substantiative, adjective
substantiator, noun
Word Origin
C17: from New Latin substantiāre, from Latin substantiasubstance
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
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Word Origin and History for substantiate

1650s, "to make real, to give substance to," from Modern Latin substantiatus, past participle of substantiare, from Latin substantia (see substance). Meaning "to demonstrate or prove" is attested from 1803. Related: Substantiated; substantiating.

Online Etymology Dictionary, © 2010 Douglas Harper
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