ἐμφανιστέον
From LSJ
Ἃ δέ σοι συνεχῶς παρήγγελλον, ταῦτα καὶ πρᾶττε καὶ μελέτα, στοιχεῖα τοῦ καλῶς ζῆν ταῦτ' εἶναι διαλαμβάνων (Epicurus, Letter to Menoeceus 123.2) → Carry on and practice the things I incessantly used to urge you to do, realizing that they are the essentials of a good life.
English (LSJ)
one must set forth, declare, Pl. Ti.65c, Str.2.5.17.
Spanish (DGE)
1 hay que exponer ὅσα τῶν χυμῶν πέρι λέγοντες ... ἐ. Pl.Ti.65c, κἄπειτα τοῦτο ἐ. Arist.SE 181a33, τούτων δὲ τὰς πλείω χρόνον συμμένειν δυναμένας ἐ. Str.2.5.17.
2 hay que manifestar c. or. complet. ἐ. δ' ὅτι ... Anaximen.Rh.1437a23, ἐ. δὲ καὶ ὡς ... Anaximen.Rh.1437b5.
Greek (Liddell-Scott)
ἐμφανιστέον: ῥηματ. ἐπίθετον τοῦ ἐμφανίζω, δεῖ ἐμφανίζειν διασαφηνίζειν, Πλάτ. Τίμ. 65C.