καταντάω
τὸν αὐτὸν ἔρανον ἀποδοῦναι → pay him back in his own coin, repay him in his own coin, pay someone back in their own coin, pay back in someone's own coin, give tit for tat, pay back in kind
English (LSJ)
A come down to, arrive, εἰς τὰ βασίλεια, ἐπὶ κοίτην, D.S.4.52, 3.27, cf. PTeb.59.3 (i B.C.), etc.: metaph., ἐπὶ τὴν φυσικὴν ὁδόν Vett.Val.259.3, cf. 185.16, 251.30. 2 in a speech or narrative, come to, arrive at a point, εἰς τὴν ἔκπτωσιν Plb. 4.1.8; ἐπί τινας λογισμούς Id.10.37.3; κ. ἐπὶ τὸν ὅρκον D.S.1.79, cf. J AJ3.10.4, etc.; have recourse to, ἐπὶ [τὴν ἡδονήν] Epicur.Ep.3p.63U.; ἐπὶ τὰ δάκρυα Phld.Lib.p.62 O. 3 of persons, κ. εἰς ἑαυτούς attack, commence hostilities against each other, Plb.30.11.3. 4 of events, come upon, πᾶς δ' ἀγὼν ἐπ' ἐμὲ κατήντα Alex.261.13; κ. εἴς τινα affect him, Phld.Ir.p.83 W.; of blood-guiltiness, fall, ἐπὶ κεφαλήν τινος LXX 2 Ki.3.29. b turn out, result, ποῦ καταντήσει πάλιν Plb.6.4.12; τὸ πρᾶγμα κ. εἰς ὑπόνοιαν D.S.1.37; εἰς τὸ μηδέν Plb.4.34.2; so of numbers, to be reduced, εἰς μόνους ἄνδρας δέκα BGU903.14 (ii A.D.), etc. 5 of an inheritance, κ. εἴς τινα fall to one's share, 1 Ep.Cor.10.11, POxy.75 (ii A.D.), etc. II trans., make to come back, bring back, τινα Palaeph.2; εἰς ἑαυτὸν τὴν ἀρχιερωσύνην LXX 2 Ma.4.24 (so intr. in pf., return, εἰς τὸν αὐτὸν κατηντηκέναι βίον BGU 1101.5 (i B.C.)).
German (Pape)
[Seite 1366] hinabkommen, hinkommen zu einem bestimmten Ziel; εἰς ἑαυτοὺς κατήντησαν, sie wandten sich gegen einander, Pol. 30, 14, 3; εἰς τὰ βασίλεια D. Sic. 4, 52; ἐπὶ τὴν κοίτην 3, 27; oft übtr. von der Rede, ἐπὶ τὴν γνώμην, λογισμοὺς τοιούτους, Pol. 10, 37, 3. 14, 1, 9; auch εἰς δοτικὴν κατήντησε, wurde mit dem Dativ verbunden, construirt, Apoll. de synt. p. 294, 2. – Uebh. sich begeben, Pol. 6, 4, 12.