ἀπροσδοκήτως
From LSJ
ἐν μὲν γὰρ εἰρήνῃ καὶ ἀγαθοῖς πράγμασιν αἵ τε πόλεις καὶ οἱ ἰδιῶται ἀμείνους τὰς γνώμας ἔχουσι διὰ τὸ μὴ ἐς ἀκουσίους ἀνάγκας πίπτειν → in peace and prosperity states and individuals have better sentiments, because they do not find themselves suddenly confronted with imperious necessities
French (Bailly abrégé)
adv.
à l'improviste.
Étymologie: ἀπροσδόκητος.
Russian (Dvoretsky)
ἀπροσδοκήτως: сверх ожидания, неожиданно Thuc., Xen., Dem., Plut.