Quick Definition
λήθη, ῆς, ἡ n.f. forgetfulness
Strong's Definition
from 2990; forgetfulness
KJV Usage: + forget
UBS Dictionary of the Greek New Testament
noun, f. | -ης | λανθάνω
29.13 · Memory and Recall · Not Remembering, Forgetting
to forget, to not remember, to lose sight of, to ignore to not recall information and thus to lose sight of its significance In a number of languages the fact of ‘forgetting’ or ‘not remembering’ is expressed idiomatically, for example, ‘to lose out of one’s heart,’ ‘to have one’s thoughts walk away,’ or ‘to have words disappear from one’s liver.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
λήθη, -ης, ἡ, (AnOw to escape notice, λήθομαι to forget), [fr. Hom. down], forgetfulness: λήθην twos λαβεῖν (see λαμβάνω, I. 6), 2 Pet. i. 9.
Mounce Concise Greek Dictionary
λήθη lēthē 1x
forgetfulness, oblivion, 2 Pet. 1:9*
Abbott-Smith Greek Lexicon
λήθη, -ης, ἡ
(< λήθω = λανθάνω), [in LXX: Le 5:15 (מַעַל), Wi 16:11, Si 14:7, al.;]
forgetfulness: λ. λαβεῖν (on the phrase, v. Mayor, in l.): II Pe 1:9.†
Moulton & Milligan — Vocabulary of the Greek NT
λήθη. With 2 Pet 1® we may compare Vett. Val. p. 2424 ἡ δὲ διάνοια . . . ἄλλοτε ἀλλαχοῦ πηδῶσα τὴν πρώτην λήθην ἀναλαμβάνει. The word survives in MGr. An(uyypes. To what is said regarding this word s.v. δόσις (ad fz.) add such exx. of its use as P Tebt I. 238 (B.c. 116-5) TA(s) λή(ψεως) (πυροῦ), and P Oxy I. 712 !8(a.D, 303) μετ᾽ ἐνεχύρων λήμψεως κατὰ τὰ ἔνγραφα αὐτοῦ ypapparia, ‘* by seizure of the securities provided in his written bonds’’ (Edd.).
Liddell-Scott-Jones — Greek-English Lexicon
λήθη (lēthē) — forgetfulness. λήθ-η, Doric dialect λάθα, ἡ, forgetting, forgetfulness, personified in [Refs 8th c.BC+]; λήθην ποιεύμενος τά μιν ἐόργεε forgetting.., [Refs 5th c.BC+]; λήθη λαμβάνει, ἔχει τινά, [Refs 5th c.BC+]; εἰς λ. ἀφιγμένα forgotten, [Refs 1st c.BC+]
II. after [Refs 8th c.BC+], of a place of oblivion in the lower world, Λήθης δόμοι [Refs 5th c.BC+]; also, ὁ τῆς Λήθης ποταμός, of the river Λιμαίας in Lusitania, [Refs 1st c.BC+]