substantiate

verb

1. To verify something by supplying evidence; to authenticate or corroborate

2. To give material form or substance to something; to embody; to record in documents

3. Establish or strengthen as with new evidence or facts

   “his story confirmed my doubts”

   “The evidence supports the defendant”

   Similar: confirm, corroborate, sustain, support, affirm

4. Represent in bodily form

   “He embodies all that is evil wrong with the system”

   “The painting substantiates the feelings of the artist”

   Similar: incarnate, body forth, embody

5. Make real or concrete; give reality or substance to

   “our ideas must be substantiated into actions”

   Similar: realize, realise, actualize, actualise

6. Solidify, firm, or strengthen

   “The president's trip will substantiate good relations with the former enemy country”