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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. sub·stan′ti·ation n. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
