D defs.my
Entry 2 senses Webster, 1913

Substantiate

/səb-stăn'-chē-ātˌ/ · Sub·stan·ti·ate · IPA /səbˈstænʃiˌeɪt/
01 v. t. To make to exist; to make real.
imp. & p. p. Substantiated; p. pr. & vb. n. Substantiating
  1. 1.
    To make to exist; to make real.
  2. 2.
    To establish the existence or truth of by proof or competent evidence; to verify; as, to substantiate a charge or allegation; to substantiate a declaration.
    “Observation is, in turn, wanted to direct and substantiate the course of experiment.” Coleridge.