ῥητέον
From LSJ
Sunt verba voces quibus hunc lenire dolorem possis, magnam morbi deponere partem → Words will avail the wretched mind to ease and much abate the dismal black disease.
English (LSJ)
A one must say, mention, τι Pl.Lg.730c, Sph.227d; one must pronounce, Id.Cra.410c. II ῥητέος, α, ον, to be spoken or mentioned, D.22.62, Hermog.Stat.7.
Greek (Liddell-Scott)
ῥητέον: λεκτέον, μνημονευτέον, τι Πλάτ. Νόμ. 730Β, Σοφ. 227D· πρέπει τις νὰ προφέρῃ, ὁ αὐτ. ἐν Κρατ. 410C. ΙΙ. ῥητέος, α, ον, λεκτέος, μνημονευτέος, Ἑρμογ.
Greek Monotonic
ῥητέον: ρημ. επίθ., αξιομνημόνευτο, αυτό που πρέπει να λεχθεί, αξιοσημείωτο, σε Πλάτ.