Lexical Definition

‎ὀψέ‎ opsé (op-seh') late ^G:ADV
from the same as ‎ὀπίσω‎ (through the idea of backwardness)

(at) even, in the end.

• (adverbially) late in the day
• by extension, after the close of the day

Abbott-Smith

ὀψέ, adv. of time, [in LXX: Ge 24:11, Ex 30:8 (עֶרֶב, הָעַרְבַּיִם בֵּין), Je 2:23; τὸ ὀ., Is 5:11 (נֶשֶׁף)*;]
1. long after, late.
2. late in the day, at evening (opp. to πρωί); in late writers used almost as an indecl. noun (v. MM, xviii): Mk 11:11, 19 13:35.
3. C. gen., late in or on; and, in late writers also after (M, Pr., 72 f.), a sense which seems to be required in Mt 28:1.†

Abbott-Smith References

Liddell-Scott-Jones

ὀψέ,

Aeolic dialect ὄψι (which see), adverb after a long time, at length, late, ἔκ τε καὶ ὀ. τελεῖ, opposed to αὐτίκα, [Refs 8th c.BC+]; ὀ. διδάσκεσθαι, μανθάνειν, to be late in learning, learn too late, [ὀψέ γε φρονεῖς εὖ 5th c.BC: Euripides Tragicus “Orestes” 99; also ὀ. δή 8th c.BC: Ilias Homerus Epicus “Illiad” 7.399, etc.; ὀ. γοῦν 4th-5th c.BC: Aeschylus Tragicus [same place]; ὀ. περ 5th c.BC: Pindarus Lyricus “N.” 3.80. ">Refs 8th c.BC+]

__b ὀ. ἀφ᾽ οὗ.. it is not long since.., [Refs 5th c.BC+]
__2 late in the day, at even, [Refs 8th c.BC+]; ὀφλεῖν.. ὀ. ὁδοῦ incur a penalty for being out late at night, [Refs 5th c.BC+]; late in the season, [Refs 8th c.BC+]; ὀ. ἦν, ὀ. ἐγίγνετο, it was, it was getting, late, [Refs 5th c.BC+]; ἡ μάχη ἐτελεύτα ἐς (variant{ἕως}) ὀ. did not end till late, [ὀψέ [prev. author] 8.23 ">Refs 5th c.BC+]; but εἰς ὀ. ψηφίζεσθαι continue voting till late in the day, [Refs 4th c.BC+]
__3 with genitive, ὀ. τῆς ἡμέρας late in the day, ἤδη γὰρ τῆς ἡμέρας ὀ. ἦν [Refs 5th c.BC+]; ὀ. τῆς ἡλικίας late in life, [Refs 2nd c.AD+]
__4 as preposition with genitive, ὀ. τούτων after these things, [Refs 2nd c.AD+]; so perhaps ὀ. σαββάτων after the sabbath day, [NT]

_{LSJ Scripture Refs: Matt.28.1}