Lexical Definition

‎ἐπιορκέω‎ epiorkéō (ep-ee-or-keh'-o) to break an oath G:V
from ‎ἐπίορκος‎

forswear self.

Usage: 1 form in 1 verse
Form Translated As     In Verse(s)
ἐπιορκήσεισ will you swear falsely Matt.5.33

Abbott-Smith

** ἐπιορκέω, -ῶ (< ἐπίορκος), [in LXX: I Es 1:48, Wi 14:28 * ;]
to swear falsely, forswear oneself: Mt 5:33.†

Abbott-Smith References

Book Refs
Matthew 5:33

Liddell-Scott-Jones

ἐπιορκέω-έω,

also ἐφιορκέω [Refs 3rd c.BC+], etc.: future -ήσω [Refs 8th c.BC+]: aorist ἐπιώρκησα [Refs], infinitive -ορκῆσαι [Refs 5th c.BC+]: perfect ἐπιώρκηκα [Refs]:—swear falsely, forswear oneself, οὐδ᾽ ἐπιορκέωήσω πρὸς δαίμονος 8th c.BC: Ilias Homerus Epicus “Illiad” 19.188: also, c.accusative, of things sworn by, τὰς βασιληΐας ἱστίας ἐπιώρκηκε has sworn falsely by the royal hearth, [Refs 5th c.BC+]; [θεούς] [ἐπιορκέωῶν 4th c.BC: Demosthenes Orator 21.119: c.\_accusative\_ \_cognate\_, ἐ. ὅρκους τινί [prev. author] 49.65, cf. Aeschin. 1.115 ">Refs 4th c.BC+]; opposed to εὐορκέω, Legal cited in [ἐπιορκέωεῖν and ψευδορκεῖν. ">Refs]

__II. simply, ={ὄμνυμι}, swear, [Refs]