substantiate C2 Topic:Describing Qualities US /səbˈstænʃiˌeɪt/ UK /səbˈstænʃieɪt/ See IPA manual Freq #36527 Meanings 1 verb To prove that something is true by giving evidence. The journalist could not substantiate her claims with any documents. Thesaurus Synonyms 1 verb · to prove that something is... supportcorroborateverify Word family Forms substantiatedsubstantiatessubstantiating Etymology AI details From Medieval Latin substantiatus (“given substance”), from the verb substantiare, first used 1657. substantiatus la-med View etymology graph -> Topics Describing Qualities Word Formation & Derivatives External links Cambridge Dictionary Wiktionary Google Images # substantiate **Type:** Word **Level:** C2 **Part of speech:** verb **IPA (US):** /səbˈstænʃiˌeɪt/ **IPA (UK):** /səbˈstænʃieɪt/ **Frequency rank:** 36527 ## Meanings 1. To prove that something is true by giving evidence. ## Examples - The journalist could not substantiate her claims with any documents. ## Roots and Affixes - Root: substantiatus ## Etymology From Medieval Latin substantiatus (“given substance”), from the verb substantiare, first used 1657. ## AI Etymology Substantiate is from Medieval Latin substantiatus (“given substance”), from the verb substantiare, first used 1657. In present-day use, it means to prove that something is true by giving evidence. ## Topics - Describing Qualities - Word Formation & Derivatives markdown