GRC
LSJ
confess, τὰς ἁμαρτίας LXX Da. 9.20, Ev. Matt. 3.6, al., J. AJ 8.4.6; admit, acknowledge, μυθογραφίαν Str. 1.2.35; ἧτταν Plu. Eum. 17; πίστεις PGnom. 18; ὅτι… Ep. Phil. 2.11, Luc. Herm. 75; διότι… LXX 2 Ma. 7.37; esp. in legal formulae, ἐ. εἰληφέναι PAvrom. 1.7 (i BC); acknowledge, υἱόν POxy. 1473.9 (iii AD); abs., acknowledge a liability, PHib. 1.30.18 (iii BC).
make grateful acknowledgements, give thanks, sing praises, LXX 2 Ki. 22.50, al., Ph. 1.59, al., Ev. Matt. 11.25; c. acc., τοῦτο τῷ Κυρίῳ LXX Ge. 29.35. later in Act., agree, consent, Ev. Luc. 22.6; — Pass., ἐξωμολογημέναι ἀποδείξεις agreed, admitted proofs, SIG 685.95 (Magn. Mae., ii BC).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
eingestehen, bekennen ; τὴν ἀλήθειαν ἄνευ βασάνων Plut. Anton. 59 ; Luc. Hermot. 75 u. a.Sp.; τὰς ἁμαρτίας Matth. 3.6 u. oft im NT ; im act., versprechen, Luc. 22.6, l.d.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)
TBESG
ἐξ-ομολογέω, -ῶ and depon. mid., -έομαι, -οῦμαι
[as always in LXX chiefly for יָדָה hi. ;]
__1. act. = cl. ὁμολογέω, to profess or agree to do (Field, Notes, 75): Luk.22:6.
__2. Mid., to acknowledge, confess (MM, Exp., xiv): τ. ἁμαρτίας, Mat.3:6, Mrk.1:5, Jas.5:16; τ. πράξεις, Act.19:18; before ὅτι, Php.2:11; with dative of person(s), to make acknowledgment to one's honour, to praise, give praise to (as in LXX; Kennedy, Sources, 118): Rom.14:11(LXX) Rom.15:9 (LXX); before ὅτι, Mat.11:25, Luk.10:21 (Cremer, 771).†
(AS)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars