To provide evidence, especially in order to support a claim, theory etc

simple past tense and past participle of evidentiate

Of or providing evidence.

(linguistics) A syntactic element (affix, clitic, or particle) that indicates evidentiality.

In an evidential way; according to evidence.

(linguistics) The encoding into a language of the source of information being communicated, so as to distinguish (for example) hearsay from something actually witnessed.

plural of evidentialism

(philosophy) The theory that the justification of a belief depends solely on the evidence for it.

present participle of evidentiate

plural of evidential