substantiat

v. t. [ imp. & p. p. Substantiated p. pr. & vb. n. Substantiating. ] 1. To make to exist; to make real. Ayliffe. [ 1913 Webster ]

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. [ 1913 Webster ]

Observation is, in turn, wanted to direct and substantiate the course of experiment. Coleridge. [ 1913 Webster ]