Quick Definition
μοιχάομαι v. I commit adultery
Strong's Definition
from 3432; (middle voice) to commit adultery
KJV Usage: commit adultery
UBS Dictionary of the Greek New Testament
verb | μοιχαλίς · μοιχεία · μοιχεύω · μοιχός
88.276 · Moral and Ethical Qualities and Related Behavior · Sexual Misbehavior
to commit adultery, adultery sexual intercourse of a man with a married woman other than his own spouse From the standpoint of the NT, adultery was normally defined in terms of the married status of the woman involved in any such act. In other words, sexual intercourse of a married man with an unmarried woman would usually be regarded as πορνεία ‘fornication’ (88.271), but sexual intercourse of either an unmarried or a married man with someone else’s wife was regarded as adultery, both on the part of the man as well as the woman. In view of the married status of the woman being the determining factor in μοιχάω, μοιχεύω, μοιχάομαι, μοιχεία, and related terms (88.277-88.278), there is a significant contrast with πορνεύω and related expressions (88.271). πορνεύω, however, may be regarded as more generic in meaning, and thus in certain contexts including adultery.
MAT 5:32 is usually rendered as ‘anyone who divorces his wife for any cause other than fornication makes her guilty of committing adultery,’ presumably on the implication that she would marry someone else, as is implied in the final clause of the verse.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
μοιχάω, -@: to have unlawful intercourse with another's wife, lo commit adultery with: twa. in bibl. Grk. mid. μοιχῶμαι, to commit adultery: of the man, Mt. ν. 32” [yet WU br.]; xix. 9
Mounce Concise Greek Dictionary
μοιχάω moichaō 4x
act., to cause to commit adultery, pass., to commit or be guilty of adultery, Mt. 5:32; 19:9; Mk. 10:11f.*
Abbott-Smith Greek Lexicon
μοιχάω, -ῶ
(= cl. μοιχεύω), [in LXX (mid., absol. and c. acc., with party of either sex as subj.): Je 3:8 5:7 7:9 9:2 (1) 23:14 36 (29):23, Ez 16:32 23:37, 43 (נאף)*;]
to commit adultery with: c. acc., fem. In NT always mid. in same sense; of the man: absol., Mt 5:32 19:9 (WH, txt., R, mg., om.); seq. ἐπ’ αὐτήν, Mk 10:11; of the woman: Mk 10:12.†
Moulton & Milligan — Vocabulary of the Greek NT
μοιχάομαι In the figurative use of the word in Jas 44 Schmiedel (Winer-Schmiedel Gr. p. 254) refers μοιχαλίδες both to men and to women (cf. v./. μοιχοὶ καὶ μοιχαλίδες N°KLP), but the fem. μοιχαλίς ‘is alone appropriate in this sense, since God is always thought of as the husband” (Ropes 7CC ad 1). For the form μοιχαλίς for μοιχάς (Vett. Val. p. 1047) Wackernagel (Hed/enistica, p. 7) compares δορκαλίς for δορκάς, and μαιναλίς for, pads. See also Kennedy Sources, p. 116.
Liddell-Scott-Jones — Greek-English Lexicon
μοιχάω (moichaō) — to commit adultery. μοιχ-άω, ={μοιχεύω} 1: metaphorically, μοιχᾶν τὴν θάλατταν have dalliance with the sea, applied by Callicratidas to [Refs 5th c.BC+]:— passive, commit adultery, of a man, [NT]; of a woman, [NT]: metaphorically, to be unfaithful to God, [LXX]
2. falsify, [Refs 2nd c.AD+]