ἀκαμαντορόας
From LSJ
πείθεται πᾶς ἥδιον ἢ βιάζεται (Dio Cassius, Historiae Romanae 8.36.3) → it's always more pleasant to be persuaded than to be forced
English (LSJ)
α, ὁ,
A of untiring stream, Ἀλφεός B.5.180.
Greek (Liddell-Scott)
ἀκαμαντορόας: ὁ ἀκαμάτως ῥέων, τὸν ἀκαμαντορόαν Ἀλφεόν, Βακχυλίδ. V. 180.
Spanish (DGE)
(ἀκᾰμαντορόᾱς) -ᾱ de curso infatigable Ἀλφεός B.5.180.