ὀλεθρίως
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)
Russian (Dvoretsky)
ὀλεθρίως: губительно, на погибель (χρῆσθαί τινι Plut.).
