τεκμηρι-όω · tekmēri-oō — LSJ
prove positively, evidence he gave, indicate, to be proved, by
prove positively, Th. 1.3, D.H. 1.89, etc.; Ὅμηρος . . εἴ τῳ ἱκανὸς τεκμηριῶσαι if he seem a sufficient voucher, Th. 1.9; τοσαῦτα ἐτεκμηρίωσεν ὅτι . . thus much evidence he gave to the fact that . . , Id. 3.104; of symptoms, indicate, Orib. Syn. 9.43:—Pass., to be proved, τισι by facts, D.C. 75.13.
II draw inferences
later in Med., draw inferences, Phld. D. 3.8, Ph. 2.505, A.D. Pron. 87.7; ἀπό τινων Phld. Sign.Fr. 2.