Quick Definition
ἀμετανόητος, ον Adj unrepentant
Strong's Definition
from 1 (as a negative particle) and a presumed derivative of 3340; unrepentant
KJV Usage: impenitent
UBS Dictionary of the Greek New Testament
adjc. | -ον | ἀ- + νοέω
41.54 · Behavior and Related States · Change Behavior
unrepentant, not turning to God, refusing to turn to God pertaining to not being repentant In a number of languages it is difficult to speak of ‘a hard and unrepentant heart.’ A more satisfactory equivalent of this expression in ROM 2:5 may be ‘but you are stubborn and refuse to repent’ or ‘... refuse to turn to God.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἀμετανόητος, -ov, (μετανοέω, q. V.), admitting no change of mind (amendment), unrepentant, impenitent: Ro. ii. 5. (In Leian. Abdic. 11 [passively], i. q. ἀμεταμέλητος, q. ν.; [Philo de praem. et poen. § 3].)
Abbott-Smith Greek Lexicon
*† ἀμετανόητος, -ον
(< μετανοέω),
impenitent: Ro 2:5
= ἀμεταμέλητος (π., Philo, al.; v. Deiss., BS, 257; MM, VGT, s.v.).†
Moulton & Milligan — Vocabulary of the Greek NT
ἀμετανόητος. P Lips I. 265 7. is late (beginning of iv/a.D.), but ὅμολοyotpey [ἑκο]υσίᾳ καὶ α[ὐ]θαιρέτῳ kal ἀμεϊτα]νοήτῳ γνώμῃ seems to bea legal formula, such as would presumably suffer little change with time: it occurs a little earlier (A.D. 289) in P Strass I. 2051, the same three words (adverb form) in the same order. Its active force agrees with that in Rom 25. (Norden Agnostos Theos p. 135 translates the word here κε unbussfertig,” and refers to Bonhoffer Zpiktet u. das NT Ῥ- 106 f., who claims that in this word (as in μετάνοια, -νοεῖν) τε gewissermassen der Gegensatz des antiken und des christlichen Denkens spiegle.”) But in CPR I. 2168 (i/ii a.p.) κυρίαν καὶ βεβαίαν kal ἀμετανόητον, P Grenf II. 68, 70 (iii/A.D.) —duplicate deeds of gift—opodoy@ χαρίζεσθαί cor χάριτι ἀναφαιρέτῳ kal dperavonTw . . . μέρος τέταρτον κτλ. there is a passive sense ‘‘not affected by change of mind,
Liddell-Scott-Jones — Greek-English Lexicon
ἀμετανόητος (ametanoētos) — unrepentant. ἀμετα-νόητος, ον, ={ἀμεταμέλητος} 1, [Refs 2nd c.AD+]
II. active, unrepentant, [NT+2nd c.AD+]. adverb -τως[Refs 3rd c.AD+]