многоголосый
From LSJ
Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
Russian > Greek
ἄμικτος, πάμφωνος, πολύφωνος, ποικιλότραυλος, πολυαρμόνιος, πολύφθογγος, πολυηχής, πολύχορδος, πολύρροθος, ποικιλόθροος