substantiate in WordNet English dictionary

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