substantiate
subs·tan·tiate
verb
1.
establish or strengthen as with new evidence or facts
- “his story confirmed my doubts”
- “The evidence supports the defendant”
2.
3.
4.
Origin
From Medieval Latin substantiatus (“given substance”), from the verb substantiare, first used 1657.
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Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.