substantiate

To prove the truth of or support with proof or evidence: synonym: confirm.

To give substance to; make real or actual.

To make to exist; make real or actual.

To establish by proof or competent evidence; verify; make good: as, to substantiate a charge or an allegation; to substantiate a declaration.

To present as having substance; body forth.

To make to exist; to make real.

To establish the existence or truth of by proof or competent evidence; to verify.

to verify something by supplying evidence; to corroborate or authenticate

to give material form or substance to something; to embody

represent in bodily form