κατόμνυμι

A. confirm by oath, τινί τι Ar. Av. 444.

2. c.acc., call to witness, swear by, τὴν ἐμὴν ψυχήν E. Or. 1517 (troch.), etc.; κ. τὼ θεώ Ar. Ec. 158: c. dupl. acc., ἁγνὸν ὅρκον σὸν κάρα κατώμοσα E. Hel.l.c.: c.gen., κ. τῆς κεφαλῆς Anon. ap. Suid.

3. swear, c.inf., IG 12(9).1273.1 (Eretria, vi B.C.).

II. Med. = Act., tender an oath, Antipho Soph. Oxy. 1364.140, Arist. Rh. 1377a16, PMagd. 26.13 (iii B.C.); swear by, τοὺς θεούς Aristaenet. 2.20: c.acc. et inf., D. 39.4, cf. Paus. 6.18.3.

2. c.dat., take an oath against, accuse on oath, Hdt. 6.65 (gen. as v.l.): abs., ib.69.