ἀδηλέω
From LSJ
Πολλὰ τὰ δεινὰ κοὐδὲν ἀνθρώπου δεινότερον πέλει → There are many wondrous things in this world, but none more wondrous than humans
English (LSJ)
(ἄδηλος)
A to be in the dark about a thing, understand not, σκοπὸς προσήκεις ὧν ἀδηλοῦμεν φράσαι S.OC35: —Pass., to be obscure, Ph.2.42,al., S.E.M.11.233, cf. 7.393; fail to appear, ἐπιμήνια-εύμενα Hp.Mul.1.2.