substantiate.
To verify something by supplying evidence; to authenticate or corroborate.
Meaning & usage
To verify something by supplying evidence; to authenticate or corroborate.
substantiate allegations
substantiate a claim
To give material form or substance to something; to embody; to record in documents
Where this word comes from
From Medieval Latin substantiatus (“given substance”), from the verb substantiare, first used 1657.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.