δυσκίνητος
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)
ον,
A hard to move, Pl.Ti.56a, Ph.2.227 (Comp.), Thphr.Vent.35 (Sup.); πλοῖα Plb.1.22.3. Adv. -τως, ἔχειν πρὸς τοὺς ἀνέμους Arist.Cael.294b17. II in mental relations, δ. πρὸς τοὺς φόβους Pl.R.503d; δ. ὑπὸ ὀργῆς Arist.VV1250a5; δ. ποιεῖν τὴν διάνοιαν Id.PA686a30; ἕξις -οτέρα διαθέσεως Id.Cat.9a10; τὸ -ον obstinacy, Phld.Lib.p.55 O.; of language, clumsiness, τὸ ἄσχημον καὶ δ. Id.Po.994.35. Adv. -τως καὶ δυσμαθῶς ἔχειν Pl.R.503d. 2 firm, resolute, Plu. Thes.36; inexorable, Ἅιδης AP7.221. 3 impervious to motion, of the soul, Plot.1.4.8.