σφάλλεσθαι
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
Greek > English (Woodhouse Verbs Reversed)
(see also σφάλλω): fail, stagger, baulked of, be at fault, be baffled in, be baffled, be baulked of, be cheated, be crossed in, be deceived in, be defeated, be defrauded of, be disappointed of, be discomfited, be foiled in, be foiled, be mistaken, be thwarted of, be wrong about things, be wrong, fail in attaining, fail in, go wrong, have a spill, make a false step, make a mistake, not succeed in, suffer a reverse