συνεπηχέω
From LSJ
ἐνίοτε οἱ οἰκέται εἰς τὴν θάλασσαν ἐλαύνουσιν αὐτούς → sometimes the slaves ride them into the sea
English (LSJ)
A join in singing, join in a chorus, ἐξῆρχε παιᾶνα, οἱ δὲ πάντες συνεπήχησαν X.Cyr.3.3.58, cf. 7.1.25; κορυφαίου κατάρξαντος σ. πᾶς ὁ χορός Arist.Mu.399a15; συνεπήχουν πρὸς τὸ ἐνδόσιμον Max.Tyr.7.7: metaph., chime in with, Ph.1.321, Plu.2.44c, Them.Or.18.218a. II re-echo, οἶκος Luc.Dom.3, cf. J.AJ12.9.4, D.C.66.22. III Pass., to be sounded at the same time, τῶν ἡμιφώνων τι -εφηχεῖται (sic) Phld.Po.2.16.