ἀδοκήτως
From LSJ
Σκηνὴ πᾶς ὁ βίος καὶ παίγνιον: ἢ μάθε παίζειν, τὴν σπουδὴν μεταθείς, ἢ φέρε τὰς ὀδύνας → All life is a stage and a play: either learn to play laying your gravity aside, or bear with life's pains.
French (Bailly abrégé)
adv.
à l’improviste.
Étymologie: ἀδόκητος.
Russian (Dvoretsky)
ἀδοκήτως: неожиданно (εὐτυχῆσαι Thuc.).