sub·stan·ti·ate 
(səb-stănshē-āt′)
(səb-stănshē-āt′)tr.v. sub·stan·ti·at·ed, sub·stan·ti·at·ing, sub·stan·ti·ates
1. To prove the truth of or support with proof or evidence: substantiate an accusation. See Synonyms at confirm.
2. To give substance to; make real or actual.
[New Latin substantiāre, substantiāt-, from Latin substantia, substance; see SUBSTANCE.]
sub·stan′ti·ation n.