ἐξαιτιολογέω
From LSJ
Τοὺς δούλους ἔταξεν ὡρισμένου νομίσματος ὁμιλεῖν ταῖς θεραπαινίσιν → He arranged for his male slaves to have sex with female slaves at a fixed price (Plutarch, Life of Cato the Elder 21.2)
English (LSJ)
A explain fully, τὸ ὅθεν ὁ φόβος ἐγίνετο ἐ. Epicur.Ep.1p.31U.
German (Pape)
[Seite 865] den Grund aufsuchen u. angeben, D. L. 10, 82.