ἀνυπονοήτως
From LSJ
Ὁ αὐτὸς ἔφησε τὸν μὲν ὕπνον ὀλιγοχρόνιον θάνατον, τὸν δὲ θάνατον πολυχρόνιον ὕπνον → Plato said that sleep was a short-lived death but death was a long-lived sleep
Russian (Dvoretsky)
ἀνυπονοήτως:
1) не будучи подозреваемым, неожиданно Polyb.;
2) не подозревая Polyb.
