πολύκτονος
From LSJ
ἔκστασίς τίς ἐστιν ἐν τῇ γενέσει τὸ παρὰ φύσιν τοῦ κατὰ φύσιν → what is contrary to nature is any developmental aberration from what is in accord with nature (Aristotle, On the Heavens 286a19)
Russian (Dvoretsky)
πολύκτονος: состоящий во множестве убийств (σίνος Aesch. - v. l. πολυκτόνος).
