Lexical Definition

‎ἀπαρνέομαι‎ aparnéomai (ap-ar-neh'-om-ahee) to deny ^G:V
from ‎ἀπό‎ and ‎ἀρνέομαι‎

deny.

• to deny utterly, i.e. disown, abstain

Abbott-Smith

ἀπ-αρνέομαι (-οῦμαι) depon., [in LXX: Is 31:7 (מאס)*;]
to deny, i.e. to refuse to recognize, to ignore: c. acc., of oneself (DCG, ii, 598 f.), Mt 16:24, Mk 8:34 (MM, VGT, s.v.), Lk 9:23 (WH, mg., txt., ἀρν-) of Peter's denials of Christ, Mt 26:34, 35, 75, Mk 14:30, 31, 72, Lk 22:34, 61; pass., Lk 12:9 (Cremer, 111).†

Abbott-Smith References

Liddell-Scott-Jones

ἀπαρνέομαι-έομαι,

future -ήσομαι[Refs 5th c.BC+]: aorist ἀπηρνησάμην[NT+3rd c.BC+], but in Trag. and Attic dialect, -ηρνήθην[Refs 5th c.BC+]:—deny utterly, [ἀπαρνέομαιεῖσθαι 5th c.BC: Antipho Orator 2.3.4; μή.. ἀπαρνέομαιηθεὶς γένῃ 5th-6th c.BC: Plato Philosophus “Sophista” 217c">Refs 5th c.BC+]; ἀπαρνέομαιηθῆναί τι to refuse, reject it, [Refs 5th c.BC+] [same place], etc.; ἀ. μή with infinitive, τὸν.. ἀπαρνέομαιηθέντα μὴ χρᾶναι[Refs 5th c.BC+]; οὐκ ἀπαρνέομαιοῦμαι τὸ μή (i.e. δρᾶσαι) [ἀπαρνέομαιήσεσθαι μὴ οὐ..; 5th-6th c.BC: Plato Philosophus “Gorgias” 461c; οἷός ἐστι μὴ ἂν ἀ. χαρίσασθαι [prev. author] “Phdr.” 256a. ">Refs 5th c.BC+]

__2 in Logic, opposed to κατηγορεῖν, deny, [Refs 4th c.BC+] —passive [Refs]
__3 ἀ. ἑαυτόν deny oneself, [NT]
__II passive, future ἀπαρνέομαιηθήσεται it shall be denied or refused, [NT+5th c.BC+]: aorist ὥνθρωπος ἓν μὲν οἶδεν, ἓν δ᾽ ἀπηρνήθη was refused, [Refs 3rd c.BC+]

_{LSJ Scripture Refs: Matt.16.24 ☩ Matt.16.24 ☩ Luke.12.9 ☩ LXX.Isa.31.7}