ἀντιφατικῶς

From LSJ

τίς δ' οἶδεν εἰ τὸ ζῆν μέν ἐστι κατθανεῖν, τὸ κατθανεῖν δὲ ζῆν κάτω νομίζεται → who knows if life is death, and if in the underworld death is considered life

Source

Russian (Dvoretsky)

ἀντιφᾰτικῶς: лог. в форме противоречия (ἀντικεῖσθαί τινι Arst.).

Spanish

de forma contradictoria