καρηβαρῶ
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
German (Pape)
an Kopfschmerz leiden, Kopfschmerzen haben, Kopfweh haben