ἀχαλέπως
From LSJ
ποταμῷ γὰρ οὐκ ἔστιν ἐμβῆναι δὶς τῷ αὐτῷ → it is impossible to step twice in the same river, you cannot step twice into the same rivers
English (LSJ)
Adv. without difficulty, Ph.Bel.92.15.
Spanish (DGE)
adv. sin dificultad Ph.Bel.92.15.
Greek (Liddell-Scott)
ἀχαλέπως: ἐπίρρ., ἄνευ δυσκολίας, Matth. Vett. σ. 92.