effectually
From LSJ
ἐπ' αὐτὸν ἐπενθρῴσκει πυρὶ καὶ στεροπαῖς ὁ Διὸς γενέτας, δειναὶ δ' ἅμ᾽ ἕπονται κῆρες ἀναπλάκητοι → the son of Zeus is springing upon him with fiery lightning, and with him come the dread unerring Fates
ἐπ' αὐτὸν ἐπενθρῴσκει πυρὶ καὶ στεροπαῖς ὁ Διὸς γενέτας, δειναὶ δ' ἅμ᾽ ἕπονται κῆρες ἀναπλάκητοι → the son of Zeus is springing upon him with fiery lightning, and with him come the dread unerring Fates
adv.
P. ἀνυσίμως; see effectively.