testify Copy link Outline 1. testĭfĭcor, 1 (constr. with acc., acc. and inf. or relat. clause; also with dep. pass. part.2. testor, 1 (constr. like preced.) • testify: 1. testĭfĭcor, 1 (constr. with acc., acc. and inf. or relat. clause; also with dep. pass. part.: Cic.: Ov.): your client t.s that he appeared, testificatur iste se stetisse, Cic. Quint. 6, 25: to t. one's love, t. amorem, id. Fam. 2, 4, extr.: to t. its ancient wealth, t. antiquas opes, Ov. F. 2, 302: v. witness, show, evidence. 2. testor, 1 (constr. like preced.): thou mayest t., testere licet, Ov. Pont. 4, 15, 11: I loudly assert and t., clamo atque testor, Cic. Mur. 37, 78: v. attest.