Matthew 16:5ἐπελάθοντο
When they crossed to the other side, the disciples forgot to take bread.
Mark 8:14ἐπελάθοντο
Now the disciples had forgotten to take bread, except for one loaf they had with them in the boat.
Luke 12:6ἐπιλελησμένον
Are not five sparrows sold for two pennies? Yet not one of them is forgotten by God.
Philippians 3:13ἐπιλανθανόμενος
Brothers, I do not consider myself yet to have taken hold of it. But one thing I do: Forgetting what is behind and straining toward what is ahead,
Hebrews 6:10ἐπιλαθέσθαι
For God is not unjust. He will not forget your work and the love you have shown for His name as you have ministered to the saints and continue to do so.
James 1:24ἐπελάθετο
and after observing himself goes away and immediately forgets what he looks like.

Abbott-Smith

ἐπι-λανθάνομαι
(alternative mid, form of ἐπιλήθω, to cause to forget) [in LXX chiefly for שָׁכַח ;]
to forget, neglect: with inf., Mat.16:5, Mrk.8:14; with genitive, Heb.6:10 13:2, 16; with accusative (as occasionally in cl.; MM, Exp., xiv), Php.3:13; ὁποῖος ἦν, Jas.1:24; pass. ptcp. (cf. Isa.23:16, Sir.3:14 23:14, Wis.2:4), Luk.12:6.†
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.