ὀτρηρῶς
From LSJ
καὶ ὑποθέμενος κατὰ τῆς κεφαλῆς φέρειν τὰς πληγάς, ὡς ἐν ἐκείνῃ τοῦ τε κακοῦ τοῦ πρὸς ἀνθρώπους → and having instructed them to bring their blows against the head, seeing that the harm to humans ... (Josephus, Antiquities of the Jews 1.50)
French (Bailly abrégé)
adv.
vite, à la hâte.
Étymologie: ὀτρηρός.
Russian (Dvoretsky)
ὀτρηρῶς: быстро, скоро, немедленно (καλεῖν τινα Hom.).