ἑρμηνευτέον
From LSJ
εἰ δὲ τύχῃ τις ἔρδων, μελίφρον' αἰτίαν ῥοαῖσι Μοισᾶν ἐνέβαλε → if someone is successful in his deeds, he casts a cause for sweet thoughts into the streams of the Muses
English (LSJ)
A one must express: ἑ. προσφόρως one must use the appropriate style, Demetr. Eloc.120.
2 one must interpret, Sch.rec.A.Pr.226.
Greek (Liddell-Scott)
ἑρμηνευτέον: ῥημ. ἐπίθ. τοῦ ἑρμηνεύω, δεῖ ἑρμηνεύειν, Σχόλ. εἰς Αἰσχύλ. Πρ. 226.