προεπίσταμαι
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 know or understand beforehand, Pl.Grg.459e, X. Cyr.4.3.12, Isoc.9.12, Arist.APr.67a22, Ael.NA7.8, etc.