V2 Vocabulary Building Dictionary



Definition: 1. to back up a claim with facts; 2. to solidify or strengthen; 3. to make something real or concrete, or represent something in physical form

Synonyms: back up, authenticate, confirm, support, prove, validate, verify, strengthen, actualize, embody, realize, materialize

Antonyms: debunk, disprove

Tips: Think of the related noun substance, as it means "important or factual material." Substantiate means "to prove substance in order to back up a claim" or "to give substance to the claim." Something that has substance is concrete and proven, therefore, substantiate also means "to strengthen or to make something concrete." One can, for example, substantiate (strengthen) a relationship or substantiate (embody, make concrete) one's feelings by acting them out.

Usage Examples:

The news organization had to apologize for airing a story it could not substantiate. (back up, prove to be accurate, support)

The lawyer asked the witness to substantiate the defendant's testimony. (support, prove, provide proof for)

We need to substantiate these great ideas by executing them. (actualize, realize)

Joey and I make it a priority to get together for coffee on a weekly basis, because it substantiates our friendship. (strengthens, supports)

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