ἀποτάδην
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)
[ᾰδ], Adv., (τείνω)
A stretched at length, Luc.Zeux.4, Ael. NA4.21; ἀ. τρέχειν Poll.6.175. 2 diffusely, prolixly, Philostr. VS1Praef., cf. 1.15.4; ξυνέστειλε τοὺς χοροὺς ἀ. ὄντας Id.VA6.11; ἀ. φθεγγόμενον [φθέγμα κηρύκων] Poll.4.94; also with κατά, τῶν κατὰ ἀ. λόγων ἀκήκοας Herm.in Phdr.p.184A.