Abbott-Smith Manual Greek Lexicon
λήθη (G3024)
1 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 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain