εὐθύνειν
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
Greek > English (Woodhouse Verbs Reversed)
(see also εὐθύνω): aim, direct, govern, guide, rule, guide aright, inspect a person's accounts