δραστηριώδης
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)
ες, A = δραστήριος, Gal.12.123 (Comp.).
Spanish (DGE)
-ες
eficaz, activode plantas usadas como medicamento ἔξωθεν μέντοι κατὰ τοῦ σώματος ἐπιτιθέμενα δραστηριωδέστερα Gal.12.123.