ὀνειδιστέον
From LSJ
καὶ λέγων ὅτι Πεπλήρωται ὁ καιρὸς καὶ ἤγγικεν ἡ βασιλεία τοῦ θεοῦ· μετανοεῖτε καὶ πιστεύετε ἐν τῷ εὐαγγελίῳ → declaring “The time has been accomplished and the kingdom of God is near: start repenting and believing in the gospel!” (Μark 1:15)
English (LSJ)
A one must reproach, τινι Pl.Lg.689c, Ph. 2.305.
Greek (Liddell-Scott)
ὀνειδιστέον: ῥηματ. ἐπίθετ. τοῦ ὀνειδίζω, δεῖ ὀνειδίζειν, τινὶ Πλάτ. Νόμ. 689C.