ἀνερεύνητος
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
English (LSJ)
ον,
A not investigated, Pl.Hp.Ma.298c; ἀ. παραλιπεῖν τι Arist.EN1181b12. 2 that cannot be searched or found out, v.l. in Pl.Cra.421d; ἀνερεύνητα δυσθυμεῖσθαι harass oneself about inscrutable things, f.l. in E.Ion255.
German (Pape)
[Seite 226] unerforscht, Eur. Ion. 255; Plat. Hipp. mai. 298 c; unerforschlich, όνόματα Crat. 421 d u. Sp.