καταποντ-ίζω · katapont-izō — LSJ
throw into the sea, plunge or drown therein, τινα Lys. 14.27, D. 23.169, Plu. Pyth. 2.403c, etc.: metaph., Axiop. 6 (Pass.); κ. τὰς βουλάς Lib. Or. 49.10:—Pass., v.l. in Plb. 2.60.8; καταποντισθεὶς ὑπὸ τῆς θαλάσσης D.S. 18.20; ἐν τῷ πελάγει Ev.Matt. 18.6; εἰς τὸ πέλαγος Plu. Tim. 13; sink, Ev.Matt. 14.30; of a ship, PPetr. 2p.135 (iii B. C.).