ἐπιλανθάνομαι
From LSJ
Γελᾷ δ' ὁ μῶρος, κἄν τι μὴ γελοῖον ᾖ → Mens stulta ridet, quando ridendum est nihil → Es lacht der Tor, auch wenn es nichts zu lachen gibt
English (Strong)
middle voice from ἐπί and λανθάνω; to lose out of mind; by implication, to neglect: (be) forget(-ful of).
English (Thayer)
perfect passive ἐπιλελησμαι; 2nd aorist middle ἐπελαθόμην; the Sept. often for שָׁכַח; to forget: followed by the infinitive, neglecting, no longer caring for: with the genitive, Winer s Grammar, § 30,10c.; Matthiae, § 347 Anm. 2, ii., p. 820f), Buttmann, 52 (46))): ἐπιλελησμένος forgotten, given over to oblivion, i. e. uncared for, ἐνώπιον τοῦ Θεοῦ before God i. e. by God (Homer on.))