Quick Definition
I deny, disown, disregard
Strong's Definition
to deny utterly, i.e. disown, abstain
Derivation: from G575 (ἀπό) and G720 (ἀρνέομαι);
KJV Usage: deny
Thayer's Greek Lexicon
ἀπαρνέομαι, ἀπαρνοῦμαι: deponent verb; future ἀπαρνήσομαι; 1 aorist ἀπηρνησαμην; 1 future passive ἀπαρνηθήσομαι with a passive significance (Luk_12:9, as in Sophocles Phil. 527 (cf. Buttmann, 53 (46))); to deny (abnego): τινα, to affirm that one has no acquaintance or connection with him; of Peter denying Christ: Matthew 26:34 f, 75 ; Mark 14:30 f, 72 ; (Luk_22:61); Joh_13:38 R G L marginal reading; more fully ἀπαρνησθαι μή εἰδέναι Ἰησοῦν, Luk_22:34 (L Tr WH omit μή, concerning which cf. Kühner, ii., p. 701; (Jelf, § 749, 1; Winer's Grammar, § 65, 2 β.; Buttmann, 355 (305))). ἑαυτόν to forget oneself, lose sight of oneself and one's own interests: Mat_16:24; Mar_8:34; Luk_9:23 R WH marginal reading
Mounce Concise Greek Dictionary
ἀπαρνέομαι apa rneomai 11x
to deny, disown, Mat_26:34 ; to renounce, disregard, Mat_16:24 deny; disown; reject.
Abbott-Smith Greek Lexicon
ἀπ -αρνέομαι (-οῦμαι ),
depon .,
[in LXX : Isa_31:7 ( H3988 ) * ;]
to deny, i.e . to refuse to recognize, to ignore: c . acc , of oneself ( DCG , ii, 598 f .), Mat_16:24 , Mar_8:34 ( MM , VGT , s.v. ), Luk_9:23 ( WH , mg ., txt ., ἀρν -) of Peter's denials of Christ, Mat_26:34-35 ; Mat_26:75 , Mar_14:30-31 ; Mar_14:72 , Luk_22:34 ; Luk_22:61 ; pass ., Luk_12:9 ( Cremer , 111).†
Moulton & Milligan — Vocabulary of the Greek NT
ἀπαρνέομαι [page 53]
A literary citation for this word may be given from the recently recovered Mimes of Herodas, iv. 74 οὐδ᾽ ἐρεῖς κεῖνος ὢ̣νθρωπος ἒν μὲν εἶδεν , ἒν δ᾽ ἀπηρνήθη , where Nairn prefers to render ἀ . failed to see rather than was denied : cf. Mar_8:34 εἴ τις θέλει ὀπίσω μου ἐλθεῖν , ἀπαρνησάσθω ἑαυτόν , let him lose sight of himself and his own interests, as Grimm renders. But this involves a needless distinction from Mar_14:72 , where the verb means disown.
Liddell-Scott — Intermediate Greek Lexicon
ἀπαρνέομαι "to deny utterly, deny", Hdt. ; followed by μή and inf., Eur. , etc.: ἀπαρνηθῆναί τι "to refuse, reject", Thuc. fut. ἀπαρνηθήσεται in pass. sense, "shall be denied or refused", Soph. , NTest.
STEPBible — Tyndale Abridged Greek Lexicon
ἀπ-αρνέομαι (-οῦμαι) depon.,
[in LXX: Isa.31:7 (מָאַס) * ;]
to deny, i.e. to refuse to recognize, to ignore: with accusative, of oneself (DCG, ii, 598 f.), Mat.16:24, Mrk.8:34 (MM, VGT, see word), Luk.9:23 (WH, mg., txt., ἀρν-) of Peter's denials of Christ, Mat.26:34-35, 75, Mrk.14:30-31, 72, Luk.22:34, 61; pass., Luk.12:9 (Cremer, 111).†
(AS)