διακωλυτέον
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 one must prevent, Pl.R.401b, Agath.2.6.
Greek (Liddell-Scott)
διακωλῡτέον: ῥημ. ἐπίθ., πρέπει τις νὰ ἐμποδίσῃ, Πλάτ. Πολ. 401Β.
