ἐκλιπαρέω
From LSJ
εἰ ἀποκρυπτόντων τῶν Μήδων τὸν ἥλιον ὑπὸ σκιῇ ἔσοιτο πρὸς αὐτοὺς ἡ μάχη καὶ οὐκ ἐν ἡλίῳ → if the Medes hid the sun, the battle would be to them in the shade and not in the sun
English (LSJ)
A entreat earnestly, move by entreaty, Str.17.1.29: c. inf., Plu. Them.5, Jul.Or.7.220b: abs., Ph.2.521, J.AJ5.7.8, Apollon. Mir.3; πολλὰ ἐ. D.L.4.7:—Pass., D.H.7.10, Str.14.5.10, Memn. 7.2.