ἀνάελπτος
From LSJ
ψυχῆς πείρατα ἰὼν οὐκ ἂν ἐξεύροιο πᾶσαν ἐπιπορευόμενος ὁδόν· οὕτω βαθὺν λόγον ἔχει → one would never discover the limits of soul, should one traverse every road—so deep a measure does it possess
English (LSJ)
ον,
A = ἄελπτος, unlooked for, ἀνάελπτα παθόντες Hes. Th.660. (Prob. misspelt for ἀν-έϝελπτος.)