διόμνυμι

A. swear solemnly, declare on oath, esp. in courts of justice, c. fut. inf., ὅρκον αὑτῷ προσβαλὼν διώμοσεν, ἦ μὴν . . δουλώσειν S. Tr. 255; δ. κτείνειν(κτενεῖν Cobet) Lycurg. 127:—more freq. in Med., διόμνυμαι, fut. ‐ομοῦμαι: aor. ‐ωμοσάμην, vow, asseverate, S. Aj. 1233, Tr. 378: c. inf., Ῥωμύλον ἰδεῖν Plu. Num. 2; ζημιώσειν Id. Cam. 39: esp. of the διωμοσία (q. v.), δ. ὅρκον Antipho 5.12; ταῦτα διωμόσω ἐν τῇ ἀντιγραφῇ you swore to this in the oath you took in support of the indictment, Pl. Ap. 27c, cf. Lys. 3.4; δ. ὑπέρ τινος Antipho 1.28; ἠρνεῖσθε διομνύμενοι on oath, D. 18.286; διομόσασθαι τὸν υἱόν swear by his head, Id. 47.73; τοὺς θεούς Din. 1.47.