δηλωτέον
From LSJ
Μεγάλοι δὲ λόγοι μεγάλας πληγὰς τῶν ὑπεραύχων ἀποτίσαντες γήρᾳ τὸ φρονεῖν ἐδίδαξαν → The great words of the arrogant pay the penalty by suffering great blows, and teach one to reason in old age
English (LSJ)
A one must set forth, Pl.Ti.48e, Ph.1.15.
Greek (Liddell-Scott)
δηλωτέον: ῥημ. ἐπίθ., πρέπει τις νὰ φανερώσῃ ἢ ἑρμηνεύσῃ, Πλάτ. Τιμ. 48Ε, Φίλων 1. 15.
