WordReference Random House Learner's Dictionary of American English © 2017
sub•stan•ti•ate /səbˈstænʃiˌeɪt/USA pronunciation   v. [+ object], -at•ed, -at•ing. 
  1. to show or establish (a claim, opinion, etc.) by proof or strong evidence:to substantiate a charge.
sub•stan•ti•a•tion /səbˌstænʃiˈeɪʃən/USA pronunciation  n. [uncountable]See -stan-.

WordReference Random House Unabridged Dictionary of American English © 2017
sub•stan•ti•ate  (səb stanshē āt′),USA pronunciation v.t.,  -at•ed, -at•ing. 
  1. to establish by proof or competent evidence:to substantiate a charge.
  2. to give substantial existence to:to substantiate an idea through action.
  3. to affirm as having substance;
    give body to;
    strengthen:to substantiate a friendship.
sub•stanti•a′ta•ble, adj. 
sub•stan′ti•ation, n. 
sub•stanti•a′tive, adj. 
sub•stanti•a′tor, n. 
  • Neo-Latin substantiātus (past participle of substantiāre), equivalent. to Latin substanti(a) substance + -ātus -ate1
  • 1650–60
    • 1.See corresponding entry in Unabridged prove, confirm, verify, validate.

Collins Concise English Dictionary © HarperCollins Publishers::

substantiate /səbˈstænʃɪˌeɪt/ vb (transitive)
  1. to establish as valid or genuine
  2. to give form or real existence to
Etymology: 17th Century: from New Latin substantiāre, from Latin substantia substance

subˌstantiˈation n

'substantiated' also found in these entries:

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