A.“ὄμνυ^θι” Il.23.585, “ὄμνυ_” S.Tr.1185, E.Med.746, cf. Orac. ap. Hdt.6.86. γ́ ; 3sg. “ὀμνύτω” IG12.134.5 ; 3pl. ὀμνύντων. Foed. ap. Th.5.47, IG12.87.24 : impf. “ὤμνυν” Ar.Av.520, Ec. 823, D.17.10, etc. : also (from pres. ὀμνύω ) 3sg. imper. “ὀμνυ^έτω” Il. 19.175 ; part. “ὀμνύουσα” Hyp.Ath.2 : impf. “ὤμνυ^ον” Il.14.278, Foed. ap.Th.5.19,24, IG22.236.14, etc. (for pres. ind. the Trag. and Ar. use only ὄμνυμι, Hdt. and Att. Prose writers also ὀμνύω, which also occurs in Com., Pherecr.143.9, Amphis 42, Diph.101, Antiph.241.1, Alex.160 ; in Hdt.1.153 ὀμνύντες is restored for the dub. form ὀμοῦντες) : fut. ὀμοῦμαι, εῖ, εῖται, Il.1.233,9.274, Hes.Op.194, Ar.Nu. 246, Lys.193, X.HG1.3.11, etc. ; Dor. 1pl. “ὀμιώμεθα” Ar.Lys.183 ; later fut. “ὀμόσω” AP12.201 (Strat.), Plu.Cic.23, etc. : aor. “ὤμοσα” Od. 4.253, etc. ; Ep. “ὤμοσσα” Il.20.313 ; Ep. also without augm. ὄμοσα, -οσσα, 19.113,10.328 : pf. “ὀμώμοκα” E.Hipp.612, Ar.Ra.1471, etc. : plpf. “ὠμωμόκειν” X.HG5.1.35, D.9.16, 19.318 :—Med., Paus.10.26.3, aor. part. “ὀμοσάμενος” SIG531.28 (Dyme, iii B. C.), IG5(2).357.11 (Stymphalus), also in compds. ἀντ-, ἀπ-, δι-, ὑπ- :—Pass., fut. “ὀμοσθήσομαι” And.3.34 : aor. “ὠμόσθην” X.HG7.4.10, (ὑπ-) Hyp.Fr.202 ; but “ὠμόθην” Is.2.40, (ὑπ-) D.48.25 : pf. 3sg. “ὀμώμοται” A.Ag.1284, “ὀμώμοσται” E.Rh.816, Arist.Rh.1377a11 ; 3pl. ὀμώμονται Lexap.And. 1.98 ; part. “ὀμωμοσμένος” D.7.10, 22.4, Arist.Rh.1377b7 (ὠμοσμένος v. l. in App.Pun.83, etc.) :—swear, c. acc. cogn., “ὀμνυέτω δέ τοι ὅρκον” Il.19.175, al. ; “ὅτις κ᾽ ἐπίορκον ὀμόσσῃ” 3.279 ; “ἑκὼν ἐπίορκον ὀμόσσας” Hes.Op.282 : c. dat. pers., “νῦν μοι ὄμοσσον . . ὅρκον” Il.19.108, al. ; “πρός τινα” Od.14.331, 19.288 :—Pass., “ὀμώμοται γὰρ ὅοκος ἐκ θεῶν” A.Ag. 1284 ; “ὅρκων ὀμωμος μένων” D.7.10 ; “εἰ ὀμώμοσται οὗτος [ὁ ὅρκος]” Arist. Rh.1377a11, cf. b7.
II. swear to a thing, affirm or confirm by oath,
1. folld. by acc., “ταῦτα δ᾽ ἐγὼν ἐθέλω ὀμόσαι” Il.19.187, cf. S.OC1145, X.Ages.1.11 ; ὄ. τὰς σπονδάς Foed. ap. Th.5.47 ; “τὴν εἰρήνην” D.18.32, cf. 9.16 ; “θεῶν πίστεις τινί” Th.5.30, etc.
2. folld. by fut. inf., swear that one will . . , Il.21.373, etc., cf. S.Ph.623,941 (pres. inf., D.21.188 codd.) : freq. with ἦ μέν, Att. ἦ μήν, preceding the inf., “καί μοι ὄμοσσον ἦ μέν μοι . . ἀρήξειν” Il.1.76, cf. 10.321, Lys.31.1, X.HG 5.3.26, etc. : also by aor. inf. and ἄν, Id.An.7.7.40 : by pres. inf., swear that one does . . , S.Ph.357 : by pf. inf., swear that one has . . , D.21.119 ; “ὤμνυς μὴ γεγονέναι” Magn.6 : by aor. inf., swear that one did . . , “ὀμνύουσι μὴ 'κπιεῖν ἀλλ᾽ ἢ μίαν” Pherecr.143.9, cf. Hdt.2.179 (aor. inf. is perh. used, without ἄν, in fut. sense, D.23.170 (s. v. l.)) : sts. a clause follows in the ind., “ὀμνύω . . , ἦ μὴν ἐγὼ ἐθυόμην” X.An. 6.1.31 ; “ὄμνυμί σοι . . , οὐκ ἤθελον . . ” Theoc.Adon.22.
3. abs., εἶπον ὀμόσ`ας ἄν I would have given my word of honour, Pl.Smp. 215d.
III. with acc. of the person or thing sworn by, swear by, “νῦν μοι ὄμοσσον ἀάατον Στυγὸς ὕδωρ” Il.14.271 ; “γαιήοχον ἐννοσίγαιον ὄμνυθι” 23.585, cf. 15.40, Hdt.5.7, A.Th.529, S.Tr.1185, etc. ; “ὀμωμοκὼς τοὺς θεούς” D.18.217 ; ὄμνυμι θεοὺς καὶ θεάς folld. by inf., X.An.6.6.17, cf. 6.1.31 : rarely c. dat., τῷ γὰρ ὄμνυτ᾽; ἢ σιδαρέοισι; Ar.Nu.248 : in Prose also with Preps., ὀ. καθ᾽ ἱερῶν τελείων Lex ap.And.1.97, Th.5.47 ; “κατ᾽ ἐξωλείας” D.21.119 ; “κατὰ τῆς Πολιάδος” Luc.Symp.32 ; “εἰς τὸν Οὐιτέλλιον” Plu.Oth.18 ; “ἐπὶ τῶν ἱερῶν” Plb.38.20.5 ; “ἐν Κυρίῳ” LXXJd.21.7 ; “ἐν τῷ ναῷ” Ev.Matt.23.16 :—Pass., ὀμώμοσται Ζεύς Zeus has been sworn by, adjured, E.Rh.816, cf. Ar.Nu. 1241.