δυσπαρόδευτος
From LSJ
θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → it is grasped only by means of an ignorance superior to intellection, it may be immediately cognised only by means of a non-intellection superior to intellection
Spanish (DGE)
-ον
de difícil paso, por donde se transita con dificultad de un pavimento en mal estado τὸ δυσπαρόδευτον ... στρῶμα ἀνελόμενος διωρθώσατο SEG 43.791 (Éfeso I a./d.C.) en Bull.Epigr.1994.99.