litterosus
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
Latin > English (Lewis & Short)
littĕrōsus: (lītĕr-), a, um, adj. id.,
I literary, learned in letters: homo mere litterosus, Cass. Hem. ap. Non. 133, 6.