#1 substantiate v. [confirm, corroborate, sustain, support, affirm] establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant". wn
#2 substantiate v. [incarnate, body forth, embody] represent in bodily form; "He embodies all that is evil wrong with the system"; "The painting substantiates the feelings of the artist". wn
#3 substantiate v. [realize, realise, actualize, actualise] make real or concrete; give reality or substance to; "our ideas must be substantiated into actions". wn
#4 substantiate v. solidify, firm, or strengthen; "The president's trip will substantiate good relations with the former enemy country". wn
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