ἀδοκήτως
From LSJ
Κύριε, σῶσον τὸν δοῦλον σου κτλ. → Lord, save your slave ... (mosaic inscription from 4th cent. church in the Negev)
French (Bailly abrégé)
adv.
à l'improviste.
Étymologie: ἀδόκητος.
Russian (Dvoretsky)
ἀδοκήτως: неожиданно (εὐτυχῆσαι Thuc.).