Thesaurus

substantiation

noun

Synonyms & Antonyms of substantiation

something presented in support of the truth or accuracy of a claim
  • the signature of a witness provides substantiation that a person's will is genuine

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“Substantiation.” The Merriam-Webster.com Thesaurus, Merriam-Webster Inc., https://www.merriam-webster.com/thesaurus/substantiation. Accessed 19 January 2020.

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to insert between existing elements

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