ἀποσφάλλεσθαι
From LSJ
τὸ ἓν καὶ τὸ ὂν πολλαχῶς λέγεται → the term being and the term one are used in many ways, one and being have various meanings, one and being have many senses
Greek > English (Woodhouse Verbs Reversed)
(see also ἀποσφάλλω): baulked of, be baffled in, be baulked of, be cheated, be crossed in, be deceived in, be defrauded of, be disappointed of, be foiled in, be thwarted of, fail in attaining, fail in, not succeed in