1. Serving to support or corroborate
   "substantiating evidence";
   - collateral, confirmative, confirming, confirmatory, corroborative, corroboratory, substantiative, validating, validatory, verificatory, verifying

1. Establish or strengthen as with new evidence or facts
   "his story substantiated my doubts";
   - confirm, corroborate, sustain, support, affirm
    
2. Make real or concrete; give reality or substance to
   "our ideas must be substantiated into actions";
   - realize, realise [Brit], actualize, actualise [Brit]
    
3. Solidify, firm, or strengthen
   "The president's trip will substantiate good relations with the former enemy country"
    
4. Represent in bodily form
   "The painting substantiates the feelings of the artist";
   - incarnate, body forth, embody

See also: supportive

Type of: act, beef up [informal], correspond, create, fortify, make, move, represent, stand for, strengthen

Encyclopedia: Substantiate