ἐξεταστέον
From LSJ
λύπης ἰατρός ἐστιν ἀνθρώποις λόγος → for men reason cures grief, for men reason is a healer of grief, a physician for grief is to people a word, pain's healer is a word to man, logos is a healer of man's anguish, talking through one's grief is therapeutic
English (LSJ)
A one must scrutinize, Pl.R.599a, Gal.1.357; one must examine carefully, ὅπως . . Jul.Or.7.226d.
Greek (Liddell-Scott)
ἐξεταστέον: ῥημ. ἐπίθ. τοῦ ἐξετάζω, δεῖ ἐξετάζειν, Πλάτ. Πολ. 599Α.