substantiate

(verb) establish or strengthen as with new evidence or facts. Synonyms: confirm, corroborate, sustain, support, affirm. Examples: "His story confirmed my doubts." "The evidence supports the defendant."

(verb) represent in bodily form. Synonyms: incarnate, body forth, embody. Examples: "He embodies all that is evil wrong with the system." "The painting substantiates the feelings of the artist."

(verb) make real or concrete; give reality or substance to. Synonyms: realize, realise, actualize, actualise. Examples: "Our ideas must be substantiated into actions."

(verb) solidify, firm, or strengthen. Examples: "The president's trip will substantiate good relations with the former enemy country."