κυβιστητήρ
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)
ῆρος, ὁ,
A tumbler, δοιὼ δὲ κυβιστητῆρε κατ' αὐτοὺς μολπῆς ἐξάρχοντες ἐδίνευον κατὰ μέσσους Il. 18.605, Od.4.18. 2 diver, Il.16.750. 3 one who pitches headlong, E.Ph.1151. II later as Adj., tumbling, κυδοιμός Tryph. 192.