Definition of substantiate in US English:



[with object]
  • Provide evidence to support or prove the truth of.

    ‘they had found nothing to substantiate the allegations’
    • ‘There is evidence in abundance which substantiates my claim.’
    • ‘The strategy is about substantiating the case and providing a framework to guide development in ways which maximise the potential.’
    • ‘But the bureau said the motives could either not be ascertained or substantiated by evidence.’
    • ‘Scientific tests at the American trials found no evidence to substantiate claims of improved performance.’
    • ‘I therefore ask you to challenge the spokesman, on my behalf, to produce evidence to substantiate his claims or withdraw them.’
    • ‘However, when some educators, among them representatives of regional accrediting bodies, began to ask for evidence of this assertion, few institutions could provide substantiating documentation.’
    • ‘Journalists try to substantiate allegations with other evidence, but this isn't always possible.’
    • ‘Yet the IGIS inquiry has provided no evidence to substantiate this conclusion.’
    • ‘They have failed to produce evidence to substantiate the reason for refusal of the application.’
    • ‘Parents were outraged after social services investigators found no evidence to substantiate the claims.’
    • ‘No evidence substantiating this claim has been made public, however, and the CIA itself has refused any comment on the operation.’
    • ‘Hence, our results provide data substantiating the earlier proposition that protein binding and protein folding have similar underlying principles.’
    • ‘In themselves they don't really mean a lot unless they can be substantiated by some scientific evidence.’
    • ‘Subsequently, the police declared that there was no evidence to substantiate the allegations.’
    • ‘However no evidence has been found to substantiate allegations that animals have been mistreated.’
    • ‘The Chicago Tribune reports that a grand jury has been convened, but no evidence substantiating the government's position has been released.’
    • ‘These decisions are based on gathering evidence and substantiating facts.’
    • ‘What's missing is concrete evidence that substantiates the claim and excludes other influences.’
    • ‘But he did not bother to substantiate his argument by providing any figures.’
    • ‘Following the pattern of the previous section, evidence will be provided substantiating the veracity of the themes of the argument.’
    prove, give proof of, show to be true, give substance to, support, uphold, back up, bear out, justify, vindicate, validate, corroborate, verify, authenticate, confirm, endorse, give credence to, lend weight to, establish, demonstrate
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Mid 17th century: from medieval Latin substantiat- ‘given substance’, from the verb substantiare.