γεγωνητέον
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)
one must proclaim, Pi.O.2.6.
Spanish (DGE)
hay que proclamar Pi.O.2.6.
Dutch (Woordenboekgrieks.nl)
γεγωνητέον γέγωνα adj. verb. van γεγωνέω, het is nodig luid (de roem) te verkondigen (van), met acc.